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Scammer Groups Are Exploiting Gmail 'Dot Accounts' For Online Fraud (zdnet.com)

Cyber-criminal groups are exploiting a Gmail feature to file for fraudulent unemployment benefits, file fake tax returns, and bypass trial periods for online services. From a report: The trick is an old one and has been used in the past. It refers to Gmail's "dot accounts," a feature of Gmail addresses that ignores dot characters inside Gmail usernames, regardless of their placement. For example, Google considers john.doe@gmail.com, jo.hn.doe@gmail.com, and johndoe@gmail.com as the same Gmail address. Regular users have been using this feature for years to to register free trial accounts at online services using the same email address, but spelled out in different ways.

In a report published today, the team at email security firm Agari says it saw criminal groups use dotted Gmail addresses in many more places all last year. In an example included in their report, Agari said it saw one group in particular use 56 "dotted" variations of a Gmail address to, among other things, submit 48 credit card applications at four US-based financial institutions, resulting in the approval of at least $65,000 in fraudulent credit.

117 comments

  1. Plus (+) trick by MightyYar · · Score: 2, Insightful

    Wait until they figure out the plus trick!

    --
    W..w..W - Willy Waterloo washes Warren Wiggins who is washing Waldo Woo.
    1. Re:Plus (+) trick by Anonymous Coward · · Score: 0

      Some web forms see the plus char as invalid. I wish more would accept it. It makes sorting email much easier.

    2. Re:Plus (+) trick by Anonymous Coward · · Score: 0

      Thinking about it, do most websites even allow "+" in emails?
      I was considering using it to organize groups of emails in to specific folders, but I ended up just using separate emails altogether and POP3ing them. (mainly for spam mitigation)
      So I am not sure if sites have a stroke when they encounter a "+" in the email fields or not.
      Anyone know?

      Wow, that's hilarious. My captcha was "dotingly".
      I don't usually post about captchas since it feels nooby as sh*t, but that was on point. (pun fully intended)

    3. Re:Plus (+) trick by MightyYar · · Score: 1

      I've had some entertaining exchanges with tech help when they don't seem to comprehend that I'm reporting a bug in their website.

      --
      W..w..W - Willy Waterloo washes Warren Wiggins who is washing Waldo Woo.
    4. Re:Plus (+) trick by Anonymous Coward · · Score: 0

      I use that when I can. Unfortunately many websites are incorrectly configured and think that "+" is not a valid email character.

      On my own email servers I use underscore instead of plus for the same effect and generally all sites accept it.

      This is a lot better than the "dot" trick because you can use any words you want instead of mangling your existing email address.

    5. Re:Plus (+) trick by MightyYar · · Score: 1

      Some do, some don't. If they are standards-compliant, they accept the plus. Before I started using catchall addresses on my own domain, I used the plus trick to sign up with a unique email on every site. Occasionally I would run into a problem with a site not accepting a plus. I'd report the validation problem to somewhat clueless tech support sometimes, other times I wouldn't bother.

      --
      W..w..W - Willy Waterloo washes Warren Wiggins who is washing Waldo Woo.
    6. Re:Plus (+) trick by Anubis+IV · · Score: 1

      I just set up a subdomain for spam email. Whenever a company wants an address, it’s companyname@spam.mydomain.com, or, more recently, just @s.mydomain.com, since a number of sites reject addresses with “spam” in the name. My wife gets a different subdomain, as do each of my family members for whom I administrate email. Makes it easy for everyone to filter out the real spam and tell who’s selling their addresses/got hacked.

    7. Re:Plus (+) trick by aardvarkjoe · · Score: 3, Interesting

      Some web forms see the plus char as invalid.

      In my experience it's most. And even if you get it past the client-side filter, it sometimes will cause the web site to break in interesting ways -- for instance, I've found cases where a site will accept a "+" address to register for an account, but then you can't actually use it to log in...

      I tried using it for a while to help me filter emails and keep track of who was selling my address, but it's broken on too many sites to be worth even making the attempt. I could report the problem, but most site owners won't bother fixing it, and it defeats the purpose of having easy-to-use aliases if I have to contact support every time I want to use one.

      I really wish that Google would offer a simple alias / disposable email service linked to Gmail that would work on most websites. Dot addresses could help (since most sites will allow a dot, at least), but they're pretty limited.

      --

      How can we continue to believe in a just universe and freedom to eat crackers if we have no ale?
    8. Re:Plus (+) trick by cyberchondriac · · Score: 1

      Doesn't work in gmail, I tried it years ago so I could track where spam might be coming from. That was disappointing.

      --

      Look back up at my post, now look back down, you're on the Internet. Now look back up. I'm a signature.
    9. Re:Plus (+) trick by The+MAZZTer · · Score: 1

      Or, you know, the "registering multiple free e-mail accounts" trick. Dots and pluses and multiple accounts are not the problem here. They have always been known and possible.

    10. Re:Plus (+) trick by MightyYar · · Score: 2

      It absolutely works in gmail. sample+slashdot@gmail.com delivers to sample@gmail.com.

      --
      W..w..W - Willy Waterloo washes Warren Wiggins who is washing Waldo Woo.
    11. Re:Plus (+) trick by Anonymous Coward · · Score: 0

      Prove it with a screen cap of that in the sample@gmail.com account.

    12. Re:Plus (+) trick by Anonymous Coward · · Score: 1

      All this stuff is permitted per the RFC
      https://tools.ietf.org/html/rfc2822#page-12

      Google doesn't get to decide this stuff.

    13. Re: Plus (+) trick by Anonymous Coward · · Score: 0

      ? I have also used + in my signups for gmail and it ignores everything afterwards. Google even documents it somewhere.

    14. Re:Plus (+) trick by cyberchondriac · · Score: 1

      Huh.. I might've been trying to create an alias of some sort in my account, I don't quite remember because that was around 12 years ago.. but your example works out fine, I gave it a shot and was successful in seeing the + bit in the "To" field. Which is all it needs, really.

      Thanks!

      --

      Look back up at my post, now look back down, you're on the Internet. Now look back up. I'm a signature.
    15. Re:Plus (+) trick by kingbilly · · Score: 1

      Are you feeling alright?

    16. Re:Plus (+) trick by Anonymous Coward · · Score: 0

      I used a catchall for all of one day, when I had 30000 new messages in my inbox for various people :D

    17. Re:Plus (+) trick by StormReaver · · Score: 1

      I just glanced through page 12 of rfc2822. It does indeed allow the period, but implies that it is a significant character. That would make "stormreaver", "storm.reaver" and "s.t.o.r.m.r.e.a.v.e.r" three distinctly different names. Google treating them the same would therefore be a violation of the standard.

    18. Re:Plus (+) trick by Anonymous Coward · · Score: 0

      mailinator

    19. Re:Plus (+) trick by MightyYar · · Score: 3, Insightful

      How is Google violating that standard? There is nothing in there that says you can't run post-delivery forwarding rules, or that users are limited to one email address each.

      --
      W..w..W - Willy Waterloo washes Warren Wiggins who is washing Waldo Woo.
    20. Re:Plus (+) trick by MightyYar · · Score: 1

      I tried but the lameness filter keeps catching my ASCII screenshots.

      --
      W..w..W - Willy Waterloo washes Warren Wiggins who is washing Waldo Woo.
    21. Re:Plus (+) trick by Anonymous Coward · · Score: 0

      Some do and some don't, and some half-ass it. Like Boston's Restaurant and Sports Bar, their website will let you sign up with an email with a +, but you can't log in with it, so it's fairly useless.

    22. Re:Plus (+) trick by Anonymous Coward · · Score: 0

      It works fine in gmail. I use it all the time.

    23. Re:Plus (+) trick by MortimerGraves · · Score: 1

      What Google is doing is preventing three different people signing up with those different names. I don't know why they did this, but it does reduce the risk of a missing period sending email to the wrong person - or someone masquerading as you by registering an address that is nearly visually identical.

      When you, StormReaver, sign up with stormreaver@gmail Google effectively reserves storm.reaver@gmail, s.torm.reaver@gmail, etc., along with all addresses using a plus sign (e.g. stormreaver+slashdot@gmail), preventing any other person from registering them.

      Any and all of these email addresses will work, but all messages sent to them will be given to you, StormReaver, with a little info tooltip explanation.

    24. Re:Plus (+) trick by aardvarkjoe · · Score: 1

      mailinator

      Mailinator and similar services are useful in cases where you either don't want email at all, or only want it for a short time -- like for registering on a website that insists on you verifying your email address. It doesn't work for longer-term things where you want to keep receiving email.

      What I would imagine as what I would like to see:

      Have a button in GMail to create a new email address that automatically forwards to your email. A really simple approach would be to just automatically pick an address like "@tempgmail.com".

      Mail addressed to that new address would get a label indicating which address was used, which makes filtering really easy, and if that address starts getting spammed you can just automatically send it to the trash.

      Just that would be really useful. You could get fancier by allowing the user to select an address; adding a browser extension so you don't even have to go to your email to set it up; allowing extensions to the address (like current "+" addresses, but using some character that most sites allow); automatically registering @tempgmail.com to forward to your address... that's just what comes to mind immediately.

      Google is probably best positioned to do something like this, although obviously a third party could do a lot of it. Are there any services like that?

      --

      How can we continue to believe in a just universe and freedom to eat crackers if we have no ale?
    25. Re: Plus (+) trick by Anonymous Coward · · Score: 0

      ? I have also used + in my signups for gmail and it ignores everything afterwards. Google even documents it somewhere.

      You are misunderstanding how to use it. You do not use + in your sign up for a new email on gmail. You, however, can send to your own email with + in it (a tagname after the +). Then gmail still receive the email but would also categorize the incoming email for you.

    26. Re: Plus (+) trick by Anonymous Coward · · Score: 0

      There are two special characters that may be used in the mailbox part of an email address (mailbox@example.com).

      These are the # and the + sign. folder#mailbox+comment@example.com

      The part before the # is ignored by the transport and is recognized only by the local delivery agent. The part following the + is ignored by the transport AND the local delivery agent.

      The "folder" (before the #) is used to designate the folder within the mailbox in which the message should be stored.
      The "+comment" is silently stripped but preserved when the message is stored in mailbox or folder#mailbox.

      Many web shits do not properly handle the # or + signifiers.
      Many web shits (such as google) do not handle the . properly.

    27. Re:Plus (+) trick by Anonymous Coward · · Score: 0

      It does indeed allow the period, but implies that it is a significant character.

      I think you are interpreting it incorrectly.

      The RFC lists out symbol characters that are valid in an email address as characters.
      Dot is valid and significant in that it is ignored, in other words a dot must be accepted as a valid character, but upon parsing you in effect remove them.

      That would make "stormreaver", "storm.reaver" and "s.t.o.r.m.r.e.a.v.e.r" three distinctly different names.

      That is incorrect. Those are three *valid* names, but after following the dot-atom specification and you remove the dots, those are three identical names.

      stormreaver = stormreaver without dots
      storm.reaver = stormreaver without dots
      s.t.o.r.m.r.e.a.v.e.r = stormreaver without dots

      All three valid, and all three identical after parsing.

      The other listed non-dot symbols that are allowed are to be parsed as-is.
      "a" isn't a "b" anymore than "a" isn't a "#", but all are valid.
      "*" would not be valid and should be rejected however.

    28. Re: Plus (+) trick by Anonymous Coward · · Score: 0

      You are misunderstanding how to use it. You do not use + in your sign up for a new email on gmail.

      He didn't say "signups for new email on gmail", which makes it your misunderstanding.

      You do most certainly can use + in your email address when signing up at other sites demanding an email, and they are delivered properly into your existing gmail account.

    29. Re:Plus (+) trick by Anonymous Coward · · Score: 0

      Hi Joe! What you're describing sounds a lot like Spam Gourmet (spamgourmet.com). I've been using it for many years and I like it a lot (and it's completely free). Their web page describes it pretty well, but here's a quick summary:

      You create a username, then you give out email addresses in this format:
      uniqueid.x.yourusername@spamgourmet.com (eg, slashdot.20.aardvark@spamgourmet.com)

      Any emails sent to that email address get forwarded to your real email address. By default, SG will only forward the first "x" messages for that uniqueid. If you start getting spam from a particular source, you can turn that email address "off" by setting the count for that uniqueid to 0.

      I should also point out that you're not strictly limited to only forwarding a limited number of emails, if that's what you want. You can set up a list of "trusted senders" which don't count against the total... and/or, you can manually reset the count to a number (up to 20) whenever you want. You can also send out emails FROM the spamgourmet email addresses, by the way.

      At the moment, they're not accepting new users - unfortunately, the guy who created and maintains the site recently announced that he has terminal brain cancer, so he's trying to figure out who can take over ownership of the site before opening registrations back up. But once that happens, I recommend checking it out. Hope this helps!

    30. Re:Plus (+) trick by Anonymous Coward · · Score: 0

      When you, StormReaver, sign up with stormreaver@gmail Google effectively reserves storm.reaver@gmail, s.torm.reaver@gmail, etc., along with all addresses using a plus sign (e.g. stormreaver+slashdot@gmail), preventing any other person from registering them.

      That's not entirely correct.

      If you sign up stormreaver, Google effectively reserves stormreaver(.|+)*. To use storm.reaver you would have had to sign up with storm.

    31. Re:Plus (+) trick by stoborrobots · · Score: 1

      To use storm.reaver you would have had to sign up with storm.

      That is specifically not true. As mentioned in the summary, if you sign up with stormreaver (or storm.reaver, or st.ormrea.ver), google will consider any of those emails as identical, and deliver them all to your mail box.

    32. Re:Plus (+) trick by ayesnymous · · Score: 1

      Some web sites don't allow it. Others are worse in that they allow you to register with a + in your email address, but other parts of their web site treat the + as invalid.

    33. Re:Plus (+) trick by Anonymous Coward · · Score: 0

      Maybe if you could put a doube dot .. or something.

  2. And that's why we have standards by david.emery · · Score: 2

    so that commercial companies like Google can ignore them, to achieve "a competitive advantage."

    1. Re:And that's why we have standards by MightyYar · · Score: 1

      You won't like my domains' behavior, then - I use catchall addresses.

      --
      W..w..W - Willy Waterloo washes Warren Wiggins who is washing Waldo Woo.
    2. Re:And that's why we have standards by Anonymous Coward · · Score: 0

      What standard is that?
      Is there some standard that says each person is only allowed a single email address issued by the government?
      Lots of companies use email aliases like this to allow email sent to different addresses to end up at the same person.

    3. Re:And that's why we have standards by Anonymous Coward · · Score: 0

      Every account on my web server is a catchall. I don't even both checking which one I'm signed in to at this point.

    4. Re:And that's why we have standards by GoRK · · Score: 1

      Literally nothing about this violates any standard whatsoever or is in any way an actual problem. The fact that a person regardless of their ethical standards can have multiple email accounts isn't relevant at all. I have had catchall email addresses since before Google existed.

    5. Re:And that's why we have standards by david.emery · · Score: 1

      The standard that says FirstNameLastName is different from FirstName.LastName!

    6. Re:And that's why we have standards by david.emery · · Score: 1

      And that same standard says that FirstNameLastName is different from firstnamelastname

      dave

    7. Re:And that's why we have standards by Anonymous Coward · · Score: 0

      This isn't the same as an alias. In exchange at O365 at least you specify the aliases explicitly. Otherwise they aren't valid. They also accept periods as valid characters and firstname.lastname@domain.com is a very common naming convention for exchange environments. I can't directly speak to administering other email systems but it seems to be a pretty common paradigm. Google on the other hand ignores periods completely and simply drops them when parsing a request. So instead of being specified aliases its more of a hack taking advantage of everyone else's support of periods in addresses Which I imagine is specified in IMAP or something. My guess is it isn't even an intentional feature. Rather, Google who are notorious for just not finishing projects, probably just didn't implement periods correctly or at all and this is the default result of it.

      Gmail is actively developed but fixing email parsing isn't sexy. And internal revelations as well as external observations show that they have a problem with project management and dictating priorities. Seems everyone can work on whatever they want to so you have a lot of pet projects and many die when nobody wants to work on them anymore or the one guy who was left. It's a company who manages their developers like an open source project.

    8. Re:And that's why we have standards by Anonymous Coward · · Score: 0

      The dot trick doesn't violate any standards, neither do plus accounts. On my own server I used - instead of + because asshat companies block + thinking they're being smart.

      Unique email addresses are basically free. Anyone can set up a server and get basically as many as they want. You can have an army of free accounts at gmail, yahoo, microsoft, etc... for, um, free. This just makes it trivially easier.

    9. Re:And that's why we have standards by Anonymous Coward · · Score: 0

      There is no standard that says firstname.lastname and firstnamelastname don't deliver to the same mailbox. None. Give it up.

    10. Re:And that's why we have standards by Zocalo · · Score: 2, Informative

      Yes, there is. RFC5322 defines what constitutes an email address, amongst other things. Arguably though, all Google is going is automatically creating every single possible RFC5322 compliant alias of a given email address that you can create by inserting full stops in the bit before the @ sign and assigning them all to the same user, how they do that (almost certainly by stripping out the full stops from the LHS) isn't any concern of RFC5322. They're not actually creating any invalid email addresses or anything; just restricting the number of possible unique email addresses they can assign on their domain.

      --
      UNIX? They're not even circumcised! Savages!
    11. Re:And that's why we have standards by Anonymous Coward · · Score: 0

      The standard DOES NOT say that they must refer to different mailboxes, merely that they be treated as distinct tokens. Google is compliant here.

    12. Re:And that's why we have standards by branchingfactor · · Score: 1

      What standard is the Gmail dot feature ignoring? And what "competitive advantage" does it give them?

    13. Re:And that's why we have standards by cascadingstylesheet · · Score: 1

      They're not actually creating any invalid email addresses or anything; just restricting the number of possible unique email addresses they can assign on their domain.

      Also causing hilarity to ensue.

      My actual primary gmail is my name with dots in it.

      Apparently a large proportion of the other mes on Earth either think or believe that they have my gmail address (without the dots), or else their correspondents do.

      I get the most interesting and outrageous emails by mistake. My favorite was the playa who had had business cards made up with "my" address ...

      Then again, maybe the dots have nothing to do with it ... surely when people try to register, Gmail tells them that myname@gmail.com is taken? But maybe there is some bug there, as I find it hard to believe that so many people really don't know their own email address.

    14. Re:And that's why we have standards by MortimerGraves · · Score: 1

      I have the same issue and suspect it may be correspondents "correcting" what they think is a wrong email.

      My gmail has a dot between first and last name (my.name@gmail) . I've received more than a few emails for a chap in the UK at (myname.gmail). I have reason to suspect that his actual email address is (mynam@gmail) and that he's either giving out the wrong address or correspondents are assuming the missing terminal "e" is inadvertent and adding it.

    15. Re:And that's why we have standards by sexconker · · Score: 1

      It's probably just some retard who doesn't know their own email address. I've got a myname@outlook.com address that someone, presumably with the same name as me, thinks they own (probably because they use outlook and think that means outlook.com is their address).

      I regularly get emails destined for him. He's some old coot in the UK and has daughters / granddughters who play youth soccer.

      One day he bought a Kindle Fire and registered it to my email address. Amazon doesn't care to validate it, so I was getting constant emails for everything he downloaded. And I had a shiny new amazon.co.uk account with an attached Kindle Fire to play with. I promptly took over his Amazon account, and started emailing images to the Kindle email address that Amazon creates.

      For example, this one: https://i.imgur.com/eWJsKZx.jp...

      I gave it a while to make sure he had a chance to see the things I was sending (they appear in the Kindle library and show on the main screen when delievered, I believe). Then I disassociated the Kindle from the account and changed the account password. I'm sure the old coot thought he was HACKED. He managed to wipe and reassociate the Kindle with the same account, and reset the password himself.

      At that point I knew I had him. The only way the geezer could have managed that one is by phoning support. So I then sent in a support ticket to Amazon and told them that they need to fucking clue this guy in to the fact that he doesn't own my email address, and that I have no way of contacting him but they do (from the previous support ticket he certainly filed). After a bit of escalation to the security team, someone with a brain (not a script-reading Indo-bot) got involved and told the fool that he was using the wrong email, then nuked the amazon.co.uk account associated with my email address.

      I still get occasional emails meant for this guy, but no fucking Kindle bullshit.

    16. Re:And that's why we have standards by fuckface · · Score: 1

      Same problem. I have a "WrongNumber" folder where I store them as evidence in case some site eventually tries to make me comply with a contract signed by "other me". >95% of the bogus emails I get have no verification link, and >99% don't have a "this isn't me" link. If you try to mail them back it takes 3-4 exchanges before they understand the dot rule, "But your mail has a dot, we didn't send to a dot." Could save so many headaches if they just implement double opt-in.

    17. Re:And that's why we have standards by randm.ca · · Score: 1

      The same happens to me. I have a rule that filters mail to myname@, so then only my.name@ hits my inbox. Conveniently 99% of spam gets sent to myname@ so gets filtered out along with alternate me's misaddressed email.

    18. Re:And that's why we have standards by Anonymous Coward · · Score: 0

      And they are different. What the standard doesn't say is that those two must belong to two different people.

    19. Re:And that's why we have standards by Anonymous Coward · · Score: 0

      has nothing to do with dots.
      I get emails from people signing my email up as their backup account.

  3. And? by pjt33 · · Score: 2

    Is there a story here, and if so what is it? That all you need to apply for a credit card is an email address?

    1. Re:And? by MightyYar · · Score: 2

      The story is that companies are so lax on security that they let you do things like update card details without actually logging in. You could achieve the same effect by forwarding emails to your victim - this just takes that step out for you.

      --
      W..w..W - Willy Waterloo washes Warren Wiggins who is washing Waldo Woo.
    2. Re:And? by Oswald+McWeany · · Score: 2

      The story is that companies are so lax on security that they let you do things like update card details without actually logging in.

      Indeed, whereas gmail might have made things more convenient for them; the fact is, there are countless ways you can create innumerable e-mail addresses. The story here isn't that they used e-mail; the story is that Financial Institutions are so desperate for business that they give out lines of credit based on only having an e-mail address.

      That's really pretty stupid. I don't want to victim blame the companies here, clearly they were taken advantage of; but they clearly have some pretty dumb policies in place here to allow themselves to be victimized here.

      --
      "That's the way to do it" - Punch
    3. Re:And? by drinkypoo · · Score: 1

      This is happening to me left and right. I've been the victim of repeated identity theft because of my name. Martin Espinoza isn't exactly the John Smith of Latin America, but it's fucking close. Maybe Mark Smith. And perhaps for the same reason, my email with the dot removed is also being heavily abused. I used to assume it was just some butt-hurt slashbot trolling me, especially since there was a rash of crap that I figured nobody would sign up for on purpose, and maybe there actually has been some of that, but I've also been getting things like lease agreements, or kids' sports information. Then again, that could be phishing too. I like to reply all to those and suggest they verify addresses before spamming, like responsible people would.

      --
      "You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
    4. Re: And? by ljw1004 · · Score: 1

      No, that's not it at all!

      The technical story is explained at the original site https://jameshfisher.com/2018/... along with good impact analysis and recommendations

    5. Re:And? by Anonymous Coward · · Score: 1

      I know it's wrong, but if a bank will give out free money in exchange for only an email address, I think that they kind of deserve to get screwed.

    6. Re: And? by kingbilly · · Score: 1

      Meh. I'm split here. On one hand, I totally agree with his recommendation that Gmail lets people opt-out of catchall or at least provide a phishing warning similar to his provided mock-up.
      On the other hand, I think he is wrong to find Gmail that most at fault instead of the users and/or Netflix.
      Look at his numbered outline for how the phishing scheme works. In step 6, this is where the other parties have failed. You shouldn't be able to go from an email to the behind-authenticated section of an account.... without authenticating! I'm not sure if this is how Netflix actually works, but I do know other companies follow this poor security practice which allows this phishing scam to work. Shame on companies that do this.
      And shame on users who don't visit the site first and authenticate. We already tell everyone to not click links in their emails but to instead visit the site starting with their known homepage.

      I think James needs to call out the behavior of companies and users a bit more before throwing the blame to Gmail. After all, forgetting catch-all email addresses, almost every adult I have needed to help with technology has multiple email accounts on their phones. They forget the login, or the existence, of an email address and just sign up another. The same phishing James mentions would be possible here without that catch-all. These older adults often have no idea that they are pulling a hotmail, yahoo, and Gmail to their mail apps on their phones/tablets concurrently. In James' scenario, the victim would have johnsmith@gmail.com on file with Netflix, and an attacker would only need to sign up as johnsmith2@gmail.com, because John Smith created this (or johnsmith@hotmail.com) last week when he couldn't remember how to sign in on a different device. In this scenario, John Smith would get the phishing link from johnsmith2@gmail.com and be none the wiser.


      tl;dr James makes some good points, and when it comes to financial institutions, I'm not surprised that a hashed link via email counts as authentication, which is what allows this exploitation to begin with. But catch-all email address doesn't solve the issue that the average adult has a catch-all email addresses (PLURAL) ecosystem on their device and does not look at the TO field, so don't state the blame is mostly on Gmail.



      The blame should be placed on USERS, followed by COMPANIES that allow LINKS with a hash to BYPASS AUTHENTICATION.

    7. Re: And? by chispito · · Score: 1

      He never explained why email verification upfront would fail to solve the issue. I still believe it is a problem of the sites or services in question.

      --
      The Daddy casts sleep on the Baby. The Baby resists!
    8. Re:And? by Anonymous Coward · · Score: 0

      This is happening to me left and right. I've been the victim of repeated identity theft because of my name. Martin Espinoza isn't exactly the John Smith of Latin America....

      I like to reply all to those and suggest they verify addresses before spamming, like responsible people would.

      me thinks I know why you get all that E-mail and get victimized by identity theft all the time...You respond.

      DUMP SPAM into the trash. Don't answer, just trash can it.

    9. Re:And? by drinkypoo · · Score: 1, Interesting

      me thinks I know why you get all that E-mail and get victimized by identity theft all the time...You respond.

      Mostly, I don't. And those who I do respond to, I'm not giving any additional information to them, so I'm not helping them steal my identity.

      DUMP SPAM into the trash. Don't answer, just trash can it.

      Yes, that's what I do with spam. Thanks for nothing, AC.

      It's quite simple, my identity gets stolen more than those of other people because of my hispanic name. People who have the same name have used my SSN for work, or to buy a car they never paid off. Then a court in Nevada City, CA granted a judgement against my SSN based on that person's debt. The evidence of debt was my SSN written on a check cashing card, by hand no less. The court that accepted that as evidence is corrupt. You can't have identity theft without corruption.

      --
      "You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
    10. Re: And? by ljw1004 · · Score: 1

      Meh. I'm split here... The blame should be placed on USERS, followed by COMPANIES that allow LINKS with a hash to BYPASS AUTHENTICATION.

      The original article also has a link to analysis by Bruce Schneier https://www.schneier.com/blog/... where he says "it's an example of two systems without a security vulnerability coming together to create a security vulnerability".

      I agree that having users validate their email addresses before using it for the first time would solve the problem. I've always been irritated by the companies that do so, imagining they did it solely to make sure that someone used a real email address rather than a throwaway spam email address, i.e. solely so they could send unsolicited spam. I guess there's a real reason for it after all. Probably they also want to reduce friction with an entire generation of folks who don't really use or care for email.

      Personally I hesitate to blame users. These are products designed for the general public. The makers should do what they can to help everyone fall easily into the "pit of success".

    11. Re: And? by ljw1004 · · Score: 1

      He never explained why email verification upfront would fail to solve the issue. I still believe it is a problem of the sites or services in question.

      https://www.schneier.com/blog/...

      Bruce Schneier's analysis was that "it's an example of two systems without a security vulnerability coming together to create a security vulnerability."

    12. Re: And? by kingbilly · · Score: 1

      Ah, much better link. And I see your reply to me above with that very link, thank you!

    13. Re: And? by chispito · · Score: 1

      He never explained why email verification upfront would fail to solve the issue. I still believe it is a problem of the sites or services in question.

      https://www.schneier.com/blog/...

      Bruce Schneier's analysis was that "it's an example of two systems without a security vulnerability coming together to create a security vulnerability."

      I respect Bruce a lot, and I think from a practical standpoint, Gmail (Google) absolutely should make those dot-aliases opt-in. But this is still 100% Netflix's problem to solve. The problem would exist if Gmail did not allow the dot aliases, you would just need to find some other predictable pattern of email aliases (like a large organization where everybody is granted both @longcompanydomain.com and @shortcompanydomain.com email addresses).

      Stop and think. If your service will be sending payment related emails to people, why would you not verify the address first? The only thing I can think of is they know this is a problem but they get more money by reducing all possible barriers to entry, and the scams are considered a cost of doing business--a cost that some of their customers pay.

      --
      The Daddy casts sleep on the Baby. The Baby resists!
    14. Re: And? by Anonymous Coward · · Score: 0

      I still don't get it. How would Eve be able to sign up to Netflix with an email address that she doesn't control? And no matter how this works, why on earth would you think it is Google's fault?

    15. Re: And? by J053 · · Score: 1

      I still don't get it. How would Eve be able to sign up to Netflix with an email address that she doesn't control? And no matter how this works, why on earth would you think it is Google's fault?

      Because, when you sign up for Netflix, you create a username and password - then, after the account has been created you provide an email address which Netflix does not verify (they send a "Welcome to Netflix" message to it, but the scam target might not notice that), but which can be used for password recovery. Then, to exacerbate the problem, Netflix sends payment update emails to the email address on the account which allow changing payment info without otherwise logging in. IOW, Netflix treats the unverified email address as if it was verified - and that is the fundamental failure here.

    16. Re:And? by Anonymous Coward · · Score: 0

      There is no such thing as identity theft. The crime is called "impersonation". When someone relies on information provided by someone "impersonating" you, that is THEIR problem, not yours. They are the victim of a crime. You do not have to do anything other than to point out that YOU have no involvement and that you are an uninvolved third-party. You are entitled for compensation (in trespass) from any entity which does not acknowledge that you are an uninvolved third-party. Any attempt by an entity reliant on the "impersonation" who attempts to make any claim against you is liable in Trespass, Fraud, and for Extortion.

      "Identity Theft" is an invention so that the relying party (ie, the bank or whatever) can pretend that it has something to do with you and that you somehow have "responsibility" or are required to do something, although there is no legal obligation whatsoever falling on you, and you are a completely harmless third-party. It is used so that the party which made the error (ie, the bank or whatever) can write letters and so forth claiming that the problem is yours (when it is not).

      Your proper response is to sue any such parties who are making unlawful claims against you in trespass (or on the case). And not in bitty-boo court, but whatever level of court you need to go to where the law applies (usually this means the Superior Court of your jurisdiction). You need to claim liquidated damages, costs of the proceeding on a solicitor and client basis (whether you have a solicitor or not), and punitive and exemplary damages; all of sufficient magnitude to require the proceeding to take place in an appropriate forum. An alternative or additional claim for Fraud and Extortion by the bank (or whatever) would also be proper. And, since the torts against you occurred where you ordinarily reside, any rule or other "paper" alleging another jurisdiction is irrelevant.

  4. WTF? by Anonymous Coward · · Score: 0

    This has nothing to do with gmail. Scammers can create any number of free e-mail accounts at many different webmail sites, or in fact setup their own e-mail server. The fact they they are using variations of the same e-mail account doesn't really matter. That's like saying a robber used 2 dimes and a nickle to park in order to go in a rob a store as opposed to using a single quarter, or not paying to park at all. DAMN those nickle and dimes!!!!

    1. Re:WTF? by Anonymous Coward · · Score: 0

      The point is that it's a single account; all those variants go to a single mailbox, significantly decreasing the effort involved in this sort of endeavor. I.e.: scripting a large-scale effort just became exponentially easier.

    2. Re:WTF? by Anonymous Coward · · Score: 0

      You can easily setup all the accounts to forward to one account if that really matters.

      I have lots of e-mail addresses, some separate accounts, some just aliases but in the end they all get delivered to my one account (my mail account).

    3. Re: WTF? by chispito · · Score: 1

      It didn't just become anything. As many have noted, catch all email isn't new. Gmail should be a little perturbed their platform is being used for fraud but it has since inception and will be for years to come. The problem is the defrauded institutions' to fix.

      --
      The Daddy casts sleep on the Baby. The Baby resists!
    4. Re: WTF? by Anonymous Coward · · Score: 0

      Anyone with an even remotely common name and a gmail address knows it's been a thing for years. "Just" in this instance refers to the understanding intended to be imparted by the anecdote.

  5. since when 1 person = 1 email address? by Anonymous Coward · · Score: 1

    Why the heck are these companies assuming that just because the email is different it is a different person?
    Anyone could just own a domain and setup an unlimited number of aliases to a single address without exploiting any stupid weirdness google created.

    1. Re:since when 1 person = 1 email address? by Oswald+McWeany · · Score: 4, Funny

      Why the heck are these companies assuming that just because the email is different it is a different person?
      Anyone could just own a domain and setup an unlimited number of aliases to a single address without exploiting any stupid weirdness google created.

      Yeah, I use about a dozen different e-mail addresses. I'm clearly not 12 people. I'm not even 12 personalities in one person.

      Oh yes we are. No we're not... yes we are.

      --
      "That's the way to do it" - Punch
    2. Re: since when 1 person = 1 email address? by Anonymous Coward · · Score: 0

      Oh well you are allowed so many email addresses if you want without being 12 people

    3. Re:since when 1 person = 1 email address? by angel'o'sphere · · Score: 1

      I'm not even 12 personalities in one person.
      Are you certain? I mean, is anyone of your "yous" certain?

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
    4. Re:since when 1 person = 1 email address? by cyberchondriac · · Score: 1

      I hate being bipolar, it's awesome!

      --

      Look back up at my post, now look back down, you're on the Internet. Now look back up. I'm a signature.
  6. So what? by Anonymous Coward · · Score: 0

    How is this any different from simply making email addresses with an incrementing number after it?
    All this tells me is that apparently all you need to get a credit card is an email address.
    Seems bizarre to blame google for that.

  7. born again nazis exploiting our psychosis? by Anonymous Coward · · Score: 0

    make it stop

  8. Credit card companies are to blame. by Anonymous Coward · · Score: 0

    "Customer": Hi, I am "Customer" and here are some facts about "Customer".

    Credit card provider: Yes, those facts seem true. You must be "Customer". I have never met you but here is a $5000 line of credit.

    1. Re:Credit card companies are to blame. by Anonymous Coward · · Score: 0

      Yeah, especially the ones that let you GAMBLE with credit cards. What the fuckety fuck?!
      They know full well people that would do that would end up getting in mad debt.
      It's so scummy.

  9. Re: the trick the banks don't want you to know by Anonymous Coward · · Score: 0

    Gave you a better click-bait title. :)

    p.s. We (the entire world) need to bring back to the death penalty for fraudsters and scammers. Or at least cut off their fingers and external genitalia, and then brand their foreheads with their crime.

  10. So what? It's a slightly easier way of getting additional email addresses.

    If your business model depends on my not having more than one email, well ... not sure why that's my problem.

    I had no idea it was so easy to be a "cyber criminal".

    1. Re:um by Anonymous Coward · · Score: 0

      It becomes your problem when criminals take out $65,000 total credit in your name and your first indication of this is a collections agency calling your place of employment. You can wax philosophical about the ease of this avenue of attack and complain about it being the CC company's problem, but when you've spent six weeks cleaning up your credit only to have a scummy collections agency resell the known false debt, starting the process all over again, ad nauseum for five years, it hardly seems relevant.

    2. Re: um by Anonymous Coward · · Score: 0

      Seems like thatâ(TM)s the real problem: lazy unethical banks and ancillary thugs. If youâ(TM)re dumb enough to give money to a criminal, thatâ(TM)s your problem, and should have zero effect on me.

    3. Re:um by Anonymous Coward · · Score: 0

      Why the hell would it be easier for a criminal to defraud a company by using john.doe over johndoe451 or johnnyd or johndoeemailz... The email address should have no relation to the application approval process (which is nearly always 100% automated), thus its only purpose in the article is to drum up fake rage against Google. If companies are using the email address as a way to identify a person's name, they deserve to be sued into bankruptcy and should pay damages to the wronged people.

    4. Re:um by Anonymous Coward · · Score: 0

      I read an article someone else linked to. The issue is the criminal signs up with a joh.ndoe address using a one-time use credit card with just enough money on it to pass the validation check. Then when the first bill comes, the automatic payment is rejected and the company emails the user to update their credit card. The real user gets the update request from the company, then clicks a 'secure' link which lets them change their payment details without entering the account password! Now the real user is paying for the criminal's usage. Criminal then changes their email address and the real user no longer has any access to the account even though it has their payment into.

      The article blames Google. The blame should be 100% on the companies. You never let someone change account details without first logging in. Email isn't secure nor are text messages. What they fuck are they thinking? They should be 100% liable for any fraud (though technically the real user is the one 'hacking' into the criminal's account).

    5. Re:um by Anonymous Coward · · Score: 0

      You know what happens when these scummy types come knocking, or sending letters?
      Show them a printed document that it was dealt with, then tell them to fuck off.
      If the letter route, shit on it, wrap it, mail it back to them. Make sure to give yourself the runs when you do that defecating. Really wipe it on there.

      But seriously, ignore it. They can't do anything in most countries of worth.
      I had constant harassment from some scummy lawyer agency after Readers Digest was bought and they somehow either lost or tried to double-dip on my subscription.
      I had full evidence of my payment.
      I just let them waste time.
      They did some scummy shotgun tactics of mailing neighbors to try get me to respond.
      But then, I must admit, I am not 100% sure of how America handles this issue.
      You'd think a document of the issue being settled would be enough, but America is also land of the corrupt, so there's also that.

    6. Re:um by Anonymous Coward · · Score: 0

      So the real story is that these companies are using unverified email addresses, and apparently people filling in payment details for random websites they don't do business with.

  11. Wrong link by ljw1004 · · Score: 3, Informative

    The article has the wrong link. The correct link to the original is https://jameshfisher.com/2018/...

    Why does Slashdot do this all the time? Include links to dumb shallow copies of the original story that add nothing but instead take away necessary technical content? The article linked to in this case failed to actually explain how the scam works!

    1. Re:Wrong link by ledow · · Score: 3, Insightful

      Guarantee you that the submitter of the story benefits from that intermediate link, and that the Slashdot team know that.

      Though, the "Slashdot effect" is literally non-existent nowadays, and this is just a tiny niche website now.

    2. Re:Wrong link by skovnymfe · · Score: 1

      You mean people aren't hosting their websites on discarded HP desktops on a dual ISDN anymore, and can actually serve up 100,000 page views like it's nothing? Technology, huh?

  12. gmail validation check by Anonymous Coward · · Score: 0


    public class DuplicateEmailValidator extends ValidatorSupport {
      private UserService userService = new UserService();

      public void validate(Object object) throws ValidationException {
        String emailAddress = (String) getFieldValue("email", object);
        if (emailAddress != null && emailAddress.endsWith("gmail.com")) {
          String addy = emailAddress.substring(0, emailAddress.lastIndexOf("@"));
          String nameStripped = addy.replaceAll("[\\.\\+]", "");
          Boolean exists = userService.isGmailRegistered(nameStripped);
          if (exists) {
            addFieldError("email", object);
            return;
          }
        }
      }
    }

    PS - How silly is it that slashdot/slashcode has stopped being updated for about 16 years now? Imagine a group of people sitting around and wondering why the engagement continues to decline oblivious or otherwise unworried that their website has failed to keep current or adopt basic convenience features. Case in point, pasting a code snippet and dealing with the lameness filters.

    1. Re:gmail validation check by ledow · · Score: 0

      UK person, on a UK keyboard, on a UK-language Windows machine with a UK-language mainstream browser (Chrome, latest stable).

      And I still get this crap:

      £

      Every time I put in a UK pound sign.

      Every other website, no problem at all. SoylentNews (based on MUCH newer Slashcode), no problem at all. Literally no weird settings, multiple computers, etc. etc.

      Oh, and I paid to "Disable Advertising" and I still get adverts anyway and the box randomly unchecks itself.

      Slashdot is basically unmaintained from what I can see. Fortunately, I don't use any of the same passwords etc. anywhere else, as I'm just waiting for the first compromise.

  13. What is the problem exactly? by kbg · · Score: 1

    I don't see any problem here. If you can apply for credit using only a email address then it's the company own fault. You don't give credit out to just an email address. And for registering free trial accounts, what's the problem here? You give out trials, so what if somebody gets many trials? Who cares?

  14. Root cause of fraud by 140Mandak262Jamuna · · Score: 5, Insightful
    US lending institutions consider the ability to lend to people at an instant to fund impulse purchases a big money maker.

    They know they may not be able to complete a thorough verification before the impulse to borrow passes. So they rush to lend. They know they make mistakes and lend to fraudsters. But to them it is cost of doing business, net profit from impulse lending is so great they do this knowingly.

    Then, the fraudulently lent loans get written off, sold for pennies for a dollar to the debt collectors. These people come after you, get default judgements, demanding that you prove you did not borrow the money. Even if you do to one debt collector, he sells the loan to the next debt collector and it goes on.

    Small things might help here:

    Make a law, "Lenders can not sell defaulted loans without fully proving the identity of the borrower.".

    Get a couple of precedent judgement, "if the bank sold a loan based on stolen identity, they are liable for slander and all damage caused to the person whose identity was compromised".

    Once you make the banks eat all the losses, and prevent damage to people whose identity is compromised, they will do the basic necessary things to verify identity.

    --
    sed -e 's/Chuck Norris/Rajnikant/g' joke > fact
    1. Re:Root cause of fraud by Anonymous Coward · · Score: 0

      Former debt collector here, if anybody calls you about debt owed, you have every right to ask "What for?" You do not have to pay any third-party a dime until you see what you're being charged for. They are required by law to itemize those charges. Any third party debt-collector will not have those details. To fight it, you have to tell them to get the lender on the call. The lender is required by law to furnish that information. Under the circumstance they ding your credit, you can fight it and have it expunged from your credit history if the third-party does not or will not furnish that information.

    2. Re:Root cause of fraud by 140Mandak262Jamuna · · Score: 1

      Many of the "debt collectors" are themselves victims of fraud. They fall for "work from home, make phone calls, make money" schemes. They are sold completely uncollectable debt at cents per dollar, they pay money for "training" and "equipment", and services to trace address and phone numbers. In the end they are so desperate they will break all these laws, will resort to telling all kinds of lies, they are in despo situation themselves.

      --
      sed -e 's/Chuck Norris/Rajnikant/g' joke > fact
    3. Re:Root cause of fraud by phantomfive · · Score: 1

      I feel sorry for no one involved here. No need for a law.

      --
      "First they came for the slanderers and i said nothing."
    4. Re:Root cause of fraud by Anonymous Coward · · Score: 0

      All the more reason for the responsibility of the fraudulent debt to go to the false report.

  15. The Real Problem by Anonymous Coward · · Score: 0

    If you find the real article that started this, you will see that the true problem is institutions not requiring authentication. Clicking a link via email proves the email exists, but doesn't prove who has access to either the email, or the institutions' accounts.

    This problem exists outside of catch-all email addresses. Some people have multiple email addresses already, which can be phished. Then snail mail. Then social media.

  16. Scammer Groups are Using Multiple Email Accounts! by branchingfactor · · Score: 1

    This report is no different than saying, "Scammer Groups are Using Multiple Email Accounts for Online Fraud!". The gmail dot feature makes it a tiny bit easier for them, but it's no different than using multiple fake email accounts. This is non-news.

  17. Email address is not SSN! by Comboman · · Score: 1

    ... file fraudulent unemployment benefits, file fake tax returns...

    Who on earth thought it was a good idea to use an email address as a unique identifier for government programs? That's what Social Security Numbers are for.

    --
    Support Right To Repair Legislation.
    1. Re:Email address is not SSN! by Anonymous Coward · · Score: 0

      No, SSN numbers are for collecting Social Security. If I didn't know better, I'd say it's right there in the name.

  18. The premise of this article is not right!! by SmaryJerry · · Score: 1

    I always log in to a firstname.lastname@gmail.com but if I try to test send an email to firstnamelastname@gmail.com then I do not receive the email. So my point is in basic testing this dotted theory does not work. Also if I try to log in to the non dotted email it does not let me sign in. I assume it's this way for everyone?

    1. Re:The premise of this article is not right!! by Anonymous Coward · · Score: 0

      The article is not about "logging in" but about "sending emails." You can automate email sending with APIs and modify the sender address.

  19. "Regular users" by 1ucius · · Score: 1

    "Regular users have been using this feature for years to to register free trial accounts at online services using the same email address, but spelled out in different ways."
    vs
    "one group in particular use [sic] 56 'dotted' variations of a Gmail address to...submit 48 credit card applications...resulting in the approval of at least $65,000 in fraudulent credit."

    I'm not sure I see the difference. Most free trial accounts are limited to one/person...

  20. The issue is people getting a credit by houghi · · Score: 1

    I live in Belgium. If you ask for a credit, your ID will be verified. Alse a credit check at the the national bank. If there are too mÃn lians, no credit. If there is a negative score, i.e. not paid for one for three months, (removed after one year) no credit. If you have a fake ID, no credit.

    If you get a credit, it will be added to the national bank.

    Only banks and the like have access to data at the Natonal Bank (NBB) and can e.g not see the names of other companies.

    So having 20 emailadresses or one does not make a difference. Yes, fraud is always possible.

    --
    Don't fight for your country, if your country does not fight for you.
  21. doesn't work for some accounts, btw by Anonymous Coward · · Score: 0

    > Google considers john.doe@gmail.com, jo.hn.doe@gmail.com, and johndoe@gmail.com as the same Gmail address.

    Not always. My friend has john.doe, someone else has johndoe. Apparently he registered john.doe before they were doing "dot doesn't matter".

    1. Re:doesn't work for some accounts, btw by Anonymous Coward · · Score: 0

      That's mine you cunt

      -- John Doe

  22. Hardly new by Anonymous Coward · · Score: 0

    Years before Google itself even existed, there was this site called iwin, which did the standard prizes-for-points thing. But you got points for new member referrals. A free webhost redirected anything@subdomain.host.com to your primary e-mail. Being an unethical young teen wanting to impress people in my AOL chat with my mad VB skillz, naturally I wrote a program to refer acct00000@, acct00001@, etc, then automatically open the e-mail, click the link, and submit the signup form.
    Since no further verification was done, it was like you signed up thousands of people a day. Many people received many nice electronics before the hole got closed.

    1 e-mail = 1 person has been foolhardy since the dialup days.

  23. Period (.) used to not be ignored by Anonymous Coward · · Score: 0

    Some of us from the beta remember that it didn't use to be ignored. It was a change that allowed that, and caused other problems as well.

    I'm one of those that gets every message intended for "John Doe" that's miss directed (John Doe 18 that doesn't exist, yep I get his email). I'm a "root" for my name so I get all the junk attached to that name. I really wish Google would fix THAT problem.

  24. old as days by Anonymous Coward · · Score: 0

    this has been a problem for a decade. StopForumSpam has had support for this since it was first discovered, normalizing for detection. Google should be kicked for this