Identity Theft-What Can Really be Done w/o a SSN?
TheItalianGuy asks: "Many of us that work in the financial sector are bombarded with daily security threats. One of the biggest these days is Identity Theft. My fellow comrades and I have been really grilling each other on differing scenarios on what could be done with what information. However, it all seems to come back the the Social Security Number. Financial companies have other controls in place (customer service verification checking, account passwords, etc) to ensure identification. But in order to be of any use, a bad guy would really need someone's SSN. Absent of that, other information would be useless. Right? That's what I would like to ask Slashdot folks. What could be realistically done with customer information without a SSN? Account numbers, address, maybe a phone or payment amount. Is that really dangerous to the customer if only those get compromised?"
Considering so many uses only request the last four digits, that makes the SSN a really insecure PIN in some cases. Insecure because it's only 4 digits, and because it never changes.
"Everything you know is wrong. (And stupid.)"
Moderation Totals: Wrong=2, Stupid=3, Total=5.
Considering that acquiring the SSNs of large groups of people is as easy as getting a desk job in certain businesses or educational institutions, I'd say getting an SSN is probably the EASY part of identity theft. How much can be done without having one would seem to be a moot point.
Breakfast served all day!
For more info, see:
http://www.faqs.org/faqs/privacy/ssn-faq/a te.html
http://archive.cpsr.net/cpsr/privacy/ssn/SSN-Priv
Bingo.
It's two different problems really. One is: How do you get a unique handle on a person ? As you say, name won't work, there's more than one "John Smith", adding in physical adress leads to duplication, because people move, so "John Smith, Bourbon Street" can very well be the same person as "John Smith, Pennsylvania Avenue".
Adding birthdate helps, but is still no guarantee, there could be two John Smiths both born on say 9.9.1979
For this problem the SSN is a decent solution. If we're talking of the person with SSN XXXXXXXX it's pretty likely we're talking of the same person, assuming every person has exactly one SSN (which ain't true, but it's atleast sorta close)
However SSN is a *lousy* way of verifying identity. Knowing it is no evidence at all that you are the person to which the number belongs.
Over the course of a life you hand out your SSN to several dozens or even several hundred different entities, you don't want all of those to later be able to pretend to be you. (or someone breaking into the computer of one of those)