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Cell Phone Secrets Die Hard

duplo1 writes "According to an article on CNN, "Selling your old phone once you upgrade to a fancier model can be like handing over your diaries. All sorts of sensitive information pile[s] up inside our cell phones, and deleting it may be more difficult than you think." It seems that corporate security policies need to extend their disposal standards to mobile devices; but what is there to educate consumers regarding such a potential breach of privacy?"

50 of 146 comments (clear)

  1. factory reset? by Anonymous Coward · · Score: 3, Interesting

    so what use is the Factory Reset on phones?

    1. Re:factory reset? by BadAnalogyGuy · · Score: 5, Informative

      It resets the RAM and loads all the default settings for built-in applications from ROM. It typically doesn't touch the FlashRAM.

      But that's just the typical reset. Factory Reset isn't a feature that is normally exposed without additional external attachments (a cable, a PC, and special software).

    2. Re:factory reset? by jonwil · · Score: 2, Informative

      On my Motorola L6 (and other motos), there are options labeled "master reset" and "master clear". Activating both will clear out pretty much everything (including stored SMSs, phonebook contents and so on. Would probobly remove custom ringtones and pictures and such too)

    3. Re:factory reset? by BadAnalogyGuy · · Score: 2, Informative

      Interesting. Does it reformat internal flash as well with factory-default settings? Most of the phones I've dealt with will wipe out the application settings folder but will leave the user data untouched, so it's less a "factory reset" than a "restore to original settings" reset.

    4. Re:factory reset? by Ucklak · · Score: 2, Interesting

      Every cellphone I've had has had the same, a master reset and a master clear which to me, and I'm a snoop, cleaned out everything.
      Why even try to sell a phone that is so last years model?

      If you're on a plan, you get free phones and if you're on a pre-pay, those phones are only good for that plan.

      --
      if you steal from one source, that is plagiarism, if you steal from many, well, that's just research.
    5. Re:factory reset? by yppiz · · Score: 3, Insightful

      If you're on a plan, you get free phones and if you're on a pre-pay, those phones are only good for that plan.

      Once you're month-to-month (which normally happens at the end of your plan) you may wish to get a new phone without being locked in for an additional year or two. You can get this year's model on eBay if you really need it, but why bother? Get last year's model for $40 and you've got the freedom of a pay as you go plan but with a much better phone and more predictable monthly costs. It's the best elements of a plan without the contract.

      --Pat

    6. Re:factory reset? by ErikTheRed · · Score: 4, Interesting

      It's probably good in many cases - notice that this "article" is practically a re-write of a press release from a company that sells (drum-roll...) software to encrypt the crap on your cell phone! Gee, you think they may just be trolling for business?

      --

      Help save the critically endangered Blue Iguana
    7. Re:factory reset? by NeMon'ess · · Score: 4, Informative

      if you're on a pre-pay, those phones are only good for that plan.

      Not true. If a phone has been unlocked for $10 or so, it can be used on any compatible network. Meaning I could eBay a Cingular phone and use it with T-Mobile-To-Go and pay by the month.

      Furthermore, for $75 I could eBay a used Motorola V330 that had been used with a T-Mobile 2-year contract. Then I could use it with T-Mobile-To-Go. I'd get a good phone for a great price that is more capable than the Samsung SGH-209. T-Mobile sells that one new for $99.

      I happened to be researching them last week before buying.

    8. Re:factory reset? by plague3106 · · Score: 2, Insightful

      Even though it's technically possible, it takes the actual clerk that has disdain for the company to actually let it happen.

      Personally I think this is where the government could do some good by putting a regulation in place. This would futher force cell providers to compete more, since you don't lose the inventment of your phone. Phone prices would also likely drop, as you can now use some phones that were not available before on say Verizon.

      I think prices are kept artifically high now, just so they can give you 'rebates' to entice you to sign up.

  2. THey won't get much from mine... by Anonymous Coward · · Score: 5, Funny

    All they'll get from me is the number for the local Domino's Pizza... well - maybe some 900 numbers...

    1. Re:THey won't get much from mine... by AcidLacedPenguiN · · Score: 2, Funny

      Yeah I'd be horrified if they got my 'reel sensitive' text message history. . .
      omg u g01n 2 da m0vi tonyt?
      may b i hav 2 get f00d b 4 tho
      ok ttyl :)
      cya

      --
      disclaimer: I've been known to store numbers in my ass for which to dig out when quantities are required.
  3. What's the point? by __aaclcg7560 · · Score: 4, Funny

    Even if you take preventive measures to erase sensitive data from devices, you still have mega-corporations who accidentally release sensitive data like a good smelly fart.

    1. Re:What's the point? by VirusEqualsVeryYes · · Score: 3, Funny

      Who needs leaky mega-corporations when you've got the NSA?

  4. easy fix by lawpoop · · Score: 5, Funny

    Just stick in in the microwave for about 10 seconds.

    --
    Computers are useless. They can only give you answers.
    -- Pablo Picasso
    1. Re:easy fix by AmberBlackCat · · Score: 3, Funny

      You can kill it faster if you replace your battery with a Sony one.

    2. Re:easy fix by BrokenHalo · · Score: 2, Funny

      Of course, if you get an LG U8120 phone like mine, you can pretty much guarantee the system software is so crappy, nobody will be able to get any information off the machine...

  5. People sell their phones? by rivj0r · · Score: 2, Funny

    I use the ultimate security system. I give my old phones to my baby daughter. Proof of the security is that her own mother won't touch it anymore. Ferpect.

  6. Common Sense? by nachmore · · Score: 2, Informative
    but what is there to educate consumers regarding such a potential breach of privacy?

    Common sense? When a big organisation gets rid of it's old computers it (usually) destroys the harddisks totally. Why should it be any different with mobile phones?

    In a previous organisation that I worked for, the IT department (who happened to be in charge of all things cellular) made sure that every outgoing phone went through it's hands before going back to the cell operator for an upgrade or onselling etc.

    The only education needed is in the specific technology department that handles these things and they just need to basically make sure that things are taken care of before the phone leaves the company - it usually isn't that hard.

    1. Re:Common Sense? by Frogular · · Score: 3, Interesting
      The only education needed is in the specific technology department that handles these things and they just need to basically make sure that things are taken care of before the phone leaves the company - it usually isn't that hard.
      I disagree. The problem is not limited to devices provided by an employer. Employees are likely to put confidential company information on their personal PDAs, just as they do on their home computers. Most of them let confidential information leak simply because they weren't aware that emptying your Recycle Bin doesn't really delete it.

      They need to be FUDed into action by articles just like this one, or by their IT departments - that *really* deleting sensitive data, be it browser history, email, pr0n or cellphone texts, requires that certain magical steps be taken.

      Once aware that some sort of magical wiping procedure is required, they will naturally bother to discover the appropriate procedures by asking their IT department/some expert if they deem the information sufficiently sensitive.

      magic == dd if=/dev/urandom of=/dev/treoflashdevicething
    2. Re:Common Sense? by 1u3hr · · Score: 2, Insightful
      Common sense? When a big organisation gets rid of it's old computers it (usually) destroys the harddisks totally. Why should it be any different with mobile phones?

      And TFA recommends you should physically destroy your old phones. All very convenient for the phone manufacturers, no competition from the secondhand market. Not to mention the toxic electronic waste. And the phone manufacturers don't provide a simple "wipe/overwrite/wipe command, for fear some idiot will use it unintentionally and complain, or because it takes longer than the "pretend" wipe they do provide that hides but doesn't really delete.

  7. What's the point by NeilTheStupidHead · · Score: 2, Funny

    of selling old phones. Even if you buy a new one every year (which I'm sure few of us do), it's worth practically nothing. Everytime I upgrade phones, I do the same thing: transfer all the desired information to the new one and 'stress test' the old one. (hint: most don't pass the 20lb maul test).

    --
    Lose: misplace or fail || Loose: not bound together
    1. Re:What's the point by NMerriam · · Score: 2, Interesting

      Even if you buy a new one every year (which I'm sure few of us do), it's worth practically nothing.

      Well, $20 is $20. If it works, you'll get at least that much on eBay. heck, I've sold no-frills phones that were 3-4 years old for $50 on ebay.

      Smartphones, the ones most likley to carry sensitive data, cost hundreds of dollars new, so selling one that is several years old can still get you $100-300 depending on popularity of the model -- particularly since service providers frequently update models with useless features (or cripple them more, as any Verizon customer has experienced) and raise the price, so people looking for replacements often turn to the used market just to get a decent phone that works.

      --
      Recursive: Adj. See Recursive.
  8. In my company... by rice_burners_suck · · Score: 5, Funny

    In my company, we dispose of cellular telephones and other information technology equipment in the proper manner. First, we place that of which we are disposing on a steel platform. Then, a gentleman wielding an enormous iron sledgehammer approaches the aforementioned device, after which he proceeds to smash the fscking thing to bits. Finally, the aforementioned device is placed into the appropriate refuse recepticle. Thus, we are assured that the privacy of our employees is protected from unwanted breaches.

    1. Re:In my company... by Joey+Patterson · · Score: 4, Funny
      Then, a gentleman wielding an enormous iron sledgehammer approaches the aforementioned device, after which he proceeds to smash the fscking thing to bits.

      Your company hired Gallagher?
    2. Re:In my company... by tktk · · Score: 2, Funny
      Then, a gentleman wielding an enormous iron sledgehammer...

      If you were really serious about security, you'd then smash the gentlman to bits. Who knows what he learned while handling it?

    3. Re:In my company... by StikyPad · · Score: 2, Interesting

      Or just get one of these bad boys:

      4033 Industrial Shredder
      The Ultimate in Central Shredding Systems. Designed to be versatile to work as a stand alone destruction unit or in combination with a disintegrator for maximum size reduction. The Model 4033 shredder is capable of destroying bulk product from roll stock to whole computer towers into pieces 2" wide at random lengths. Add a disintegrator to achieve particle sizes to meet DoD requirements.

      Disintigrator description:

      Waste material is fed into the machine through a safety feed hopper. The cutting mechanism consists of 2 to 5 knives mounted on a steel rotor that pass 2 stationary bed knives (0.005 inch gap) at 500-600 rotations per minute (RPM) for up to 6,000 cuts per minute.

      Waste is cut until small enough to fall through a perforated steel screen beneath the cutting rotor. The screens are interchangeable so that the degree of destruction can be varied from 3/32 to 3 inches. Thick, tough materials such as diskettes and CD-ROMs can be destroyed with less power and less chance of jams due to the high mass of the rotor and thickness of the knives.

      http://www.semshred.com/content603.html

      No home should be without one.

      Although personally, the only times I've bought a new mobile phone were to replace the old ones I'd lost or broken. If someone wants to try to repair a phone that's taken a saltwater bath in order to steal my contact numbers, more power to them.

    4. Re:In my company... by StikyPad · · Score: 2, Funny

      I see your prefrontal lobe is intact.

  9. Some carriers handle this properly by achurch · · Score: 4, Informative

    NTT DoCoMo, in Japan, has a little hole-punch-like device they use to destroy the internal memory chip when you give your phone back, and best of all they do it right there on the spot: you give them your old phone, and they stick it in the device and go "crunch!" Of course, I haven't actually seen the schematics for any (much less all) of the DoCoMo phones so I could theoretically be being fooled, but given the nearly paranoid attitude among Japanese these days over personal information, I doubt DoCoMo would take that risk.

  10. Bah by Cervantes · · Score: 4, Insightful

    I want to blame the sellers for being idiots and not properly clearing their devices... but really, it's the manufacturers who need to be clearer. Having different kind of "wipes" on a device but not labelling them differently is just plain stupid. There needs to be one option called "quick reset", and another called "Secure Wipe - You will lose everything forever, are you really sure???" and then have 5 queries after it. It's bad when a consumer gets misled by thinking "wipe" means "wipe", but I've had devices where I've found that my "wipe" wasn't total either, and it's because the manufacturer is misleading with their instructions.

    That said, i remember the good old days, when you didn't loan out your floppies without running a wipe program on them... otherwise the boys found your 'secret stash' that you just deleted.

    --
    If I knew the wedgies I gave you back in 6th grade would have resulted in this . . . I might have taken a moments pause.
    1. Re:Bah by VirusEqualsVeryYes · · Score: 2, Funny
      That said, i remember the good old days, when you didn't loan out your floppies without running a wipe program on them... otherwise the boys found your 'secret stash' that you just deleted.
      You might want to rethink your life if your "secret stash" fits on a single floppy...
    2. Re:Bah by cryfreedomlove · · Score: 2, Insightful

      This is a free market society. Why don't you create a cell phone manufacturing company that's very clear about how to wipe a phone? If the market wants or needs this then you'll get rich.

      Personally, I think 99% of the negligence belongs with the consumer who is trying to eek a few pennies out of their old phone.

  11. Conflicting reports by solevita · · Score: 2, Interesting

    "Police expert admits mobile phone forensics barrier"

    As posted to the internet just last month:

    "A police digital forensics expert has admitted that some mobile phones are impenetrable to software used by police in forensic examinations. The revelation follows a paper by a Cambridge researcher which originally made the claim."

    http://www.theregister.co.uk/2006/07/07/mobile_pho ne_forensics_barrier/

    1. Re:Conflicting reports by Frogular · · Score: 2, Informative

      Also in the article:

      "Mansell pointed out that time-consuming manual examination can still retrieve phone data."

      All they're saying is that non-standard formats make it harder to lift information - it's still there. Just like it's harder to recover lost data on ReiserFS than it is on ext2. It's still there, but the filesystem makes it a little more confusing.

      Anyway, this should become less of a problem as manufacturers settle on a few standard formats to cut costs.

  12. once erased, it can also come back.. by searchr · · Score: 5, Interesting

    I bought a "smart" phone off eBay, it was a good deal, works great. Turns out the old user was a doctor. I know this because, even though he had figured out how to erase his messages and crap, the thing was set up on his hospital's corporate wifi email system, with portable Outlook. The first time I got online (do you know how cool it is that all the pubs in my neighborhood have free wifi now? it's very cool.) It reached out and REFILLED the inbox with hundreds of VERY personal emails (his and his patients), including attachments.

    I have no idea what any of the xrays were trying to show me, but he seemed pretty concerned about some spots in a couple of them. I thought it was cool I could zoom in on them with my phone. Man I hope copies are being kept on the server...

  13. NIST review of available tools: by solevita · · Score: 2, Informative

    More details than CNN

    "This report gives an overview of current forensic software, designed for acquisition, examination, and reporting of data discovered on cellular handheld devices, and an understanding of their capabilities and limitations."

    http://csrc.nist.gov/publications/nistir/nistir-72 50.pdf

  14. Funny story... by JourneyExpertApe · · Score: 2, Interesting

    I accidentally broke my old phone, and I wasn't due for an "upgrade" from my provider, so I had to buy a new one. When I got my "new" phone for around $120 dollars, I promptly installed my SIM card only to find that, in addition to my address book, I also had several listings for people I didn't know. My first thought was that these were numbers of associates at the phone store, preloaded in case I had any problems, but after examining the body of the phone and discovering scratches, I realized, to my dismay, that this was a second-hand phone. When I brought it back, I got the feeling that they didn't really want to replace it with a new one, but there just happened to be another customer buying a dozen or so phones for his business, so they really had no choice.

    I always wondered what would have happened if I had called those people in the phone's memory to try to find out who's phone I had.

    --
    If you can read this sig, you're too close.
  15. big deal.. by Mister+Whirly · · Score: 2, Funny

    If anyone wants your calling info, they can just ask the NSA... (or steal one of their unencrypted, non-password protected laptops...)

    --
    "But this one goes to 11!"
  16. What a surprise, Delete doesnt Delete by Robbyboy · · Score: 5, Insightful

    It really makes you wonder where the knowledge gap occurs. Many people know that when you delete files from a computer that they are not really deleted and they could be restored. How could they miss the connection? If you've seen one microchip, you've seen them all. Be afraid, be very afraid...

    But anyway, who in their right mind would put sensitive information on a medium that its user can lose control over? (Lets overlook the computers that the government has been misplacing with everyones social security numbers for a split second) You (generally) wouldnt let someone use your computer if it has information that you do not want them to see, why should a cellular telephone be any different.

    Next thing you know someone will be surprised at the ability to intercept bluetooth. Someone will be transmitting sensitive information via bluetooth and some buck tooth 14 year old will be around the corner to intercept it...

    In closing, since people did not know that their data does not necessarially go away, did you know that if you do not secure a wireless router, people can potentially intercept information?

    Its a pity you cannot legislate stupidity...

  17. Proper cell phone design... by b0s0z0ku · · Score: 2, Insightful
    would involve keeping all data on a removable compact flash card. When the owner sells the phone, the flash card can either be removed and reused in their new phone, or slagged with Thermite.

    -b.

  18. No trust for the Bells, that's for sure. by twitter · · Score: 5, Interesting

    Even if you take preventive measures to erase sensitive data from devices, you still have mega-corporations who accidentally release sensitive data like a good smelly fart.

    Even when they don't release it publically, they lack both the competence or will to keep it to themselves. I remember, ten years ago, an acquaintance who taunted a friend with private medical information. She had been a clerk for a debt collection agency and used her access to look up all of her friends. The big dumb companies share things they should not and don't keep tabs on it. Imagine what clerks at ChoicePoint could do, then think of how owned their little windoze terminals are. There's not much real privacy left anymore.

    Cell phones are not free platforms and the owners are some of the most notorious abusers of personal privacy. Almost all of the Baby Bells were too happy to comply when the Bush administration asked them to break the law and tap their customers. Just to get a Cigular phone six years ago, I had to give the creeps monthly access to my credit record! You have to remember that the parent company at one time refused to allow people to plug modems into their network. The babies continue to stonewall broadband to this day. They will do anything and everything to get some crummy little franchises over their users. Your "secrets" are the last of their concerns, except where it can be used for their own marketing purposes.

    My answer kind of sucks, but it works. My cell phone is nothing more. I put names into it because the phone company already knows who I'm talking to. Nothing else goes in. I don't SMS, I will never use their calenders. I resent GPS tracking. I'll never trust their cameras and I'll keep it in a box if I'm ever talking about something sensitive. The damn thing is like a bug in my pocket that can be abused by anyone with the technical wherewithal to pull the wool over the Baby Bells. These days, that's about anyone.

    --

    Friends don't help friends install M$ junk.

    1. Re:No trust for the Bells, that's for sure. by soft_guy · · Score: 2, Funny

      >>you still have mega-corporations who accidentally release sensitive data like a good smelly fart.

      Even when they don't release it publically, they lack both the competence or will to keep it to themselves.

      That's funny - my wife says the same thing about me farting and I'm not even a corporation!

      --
      Avoid Missing Ball for High Score
    2. Re:No trust for the Bells, that's for sure. by plague3106 · · Score: 2, Insightful

      Even when they don't release it publically, they lack both the competence or will to keep it to themselves. I remember, ten years ago, an acquaintance who taunted a friend with private medical information. She had been a clerk for a debt collection agency and used her access to look up all of her friends. The big dumb companies share things they should not and don't keep tabs on it. Imagine what clerks at ChoicePoint could do, then think of how owned their little windoze terminals are. There's not much real privacy left anymore.

      If this is true, and in the US, your friend can sue and easily win as sharing medical data is a HIPPA violation, unless she consented. I believe even then however, the requesing party has to have a ligitimate reason for the medical data; they can't just ask for it for the hell of it.

  19. Greed, not paranoia by SuperBanana · · Score: 2, Informative

    Of course, I haven't actually seen the schematics for any (much less all) of the DoCoMo phones so I could theoretically be being fooled, but given the nearly paranoid attitude among Japanese these days over personal information, I doubt DoCoMo would take that risk.

    I think greed has more to do with it than anything else; by destroying the phone instead of reselling/recycling/donating it, they protect the market for new phones. If people sold their phones instead of tossing them or letting them be destroyed, then people whose phones died and just simply needed a -working- phone, would be able to get one used instead of having to buy a new one.

    Right now, SIM/provider locks are used to help artificially inflate the 'cost' of phones, and get extra money for providers on the contract side, too. I have an old "legacy" AT&T account that costs me $25/month. My phone is on the fritz, and when I asked about getting a new one from "Cingular", Cingular told me that I'd have to get a different plan. Surprise surprise- the "same" plan from Cingular is well over $30, which means that they're getting an extra $120 a year from me.

    In the case of the article- they're talking about Smartphones with flash-memory devices, where you need to zero out the memory device to assure no data can be recovered, just like you have to zero a hard drive. "Normal" phones don't have any of these issues- and the article neglects to mention this clearly.

    So, just pop the memory card out, pop it into a reader, and run a full format of the card, or just copy a file nearly the same size as the card to it. Done. Nothing to see here, move along, "security research" company scaring people needlessly.

    PS: Your phone contains MANY toxic chemicals that DO NOT belong in a landfill. They MUST be properly recycled or donated. If you're too lazy to have it properly recycled or sell it on ebay, please donate it and its charger to a local domestic abuse shelter, as any cell phone by law must be able to dial 911.

  20. Re:I can tell you've never had a cell phone. by jonwil · · Score: 3, Informative

    Here in australia, you can ring 19xx numbers from cellphones just fine (unless you have a prepaid or other wierd account/plan)

  21. I thought we were supposed to be nerds by MjrTom · · Score: 2, Interesting

    Am I the only one here who disassmbles cell phones for parts? LCD Screens, vibrating motors. Most things are too entirely small to use, but I do it anyway.

  22. Resetting Palm? by zoftie · · Score: 2, Interesting

    As article said:
    "Palm Inc., which makes the popular Treo phones, puts directions deep within its Web site for what it calls a "zero out reset." It involves holding down three buttons simultaneously while pressing a fourth tiny button on the back of the phone.

    But it's so awkward to do that even Palm says it may take two people. A Palm executive, Joe Fabris, said the company made the process deliberately clumsy because it doesn't want customers accidentally erasing their information."

    They haven't seen kungfoo of emacs users 5 keys to a command ;-)
    2c

    1. Re:Resetting Palm? by supersocialist · · Score: 2, Informative

      This is pure rubbish: to zero-out a Treo 650, all you have to do is hold the power button while pressing reset. When the second Palm logo comes up, release power and hit up on the 5-way to confirm.

  23. Blueberry Blues by geauxtiggers · · Score: 2, Informative

    About two years ago, I traded in my Blueberry for a Treo 600. My friends at the local cellphone shop agreed to sell my Blueberry for me and promised to clear the memory and personal data before doing so. Thru some glitch ( I love that word ), they didn't get the speed dial numbers erased from the phone. My closest family members and friends went thru a week of getting annoying calls in the middle of the night (the new owner had it in his pocket and everytime he sat down, it dialed someone on the list), before we finally realized what was happening. Thankfully he sat on it one too many times and cratered the screen on the unit in just under two weeks. When they finally got the unit back, it was destroyed beyond repair. I should have done that in the first place. Live and Learn, eh?

  24. Why sell? by Kuvter · · Score: 3, Insightful

    Whats wrong with this world, why are you selling a cell phone when it still works. If it works for you, keep it. I think you're just wasting money on a new phone that you don't need. Keep your phone and keep your privacy, untill it breaks; then dispose of it accordingly.

    --
    "To be is to do." --Socrates
    "To do is to be." -- Aristotle
    "Do-Be-Do-Be-Do..." --Sinatra
  25. (Nokia) IntelliSync Device Manager by gjh · · Score: 2, Informative
    This is going to read like an advert however I phrase. I *do* work for Nokia on this product. I don't think I am unreasonably biased.

    The industry is already aware of the problem and has solved it.... the answer is:

    Nokia/IntelliSync Device Manager OMA

    You buy a per device license and you can then use the licenses in any ratio between the Professional Edition (which specializes in PDA management) and the OMA edition which specializes in phones. With the OMA edition - for which I developed the training class - you can establish a secure trusted connection to the handset. A 4-digit hex fingerprint is required to avoid MITM. From that point on - any action can be carried out by the central adminstrator without further user intervention, including application installation, settings, inventory, and a complete device wipe. Available applications include Blackberry and 4-5 other email solutions, Norton AV, and Pointsec flash disk encryption.

    The problem is not the technology the technology is HERE. The problems are:
    1. Persuading business to organize their handsets with the same zeal as their PCs
    2. Selling this kind of thing through cell operators - who have a vested interest in you using your handset LESS cost effectively.