Skip to Content

One in 10 social security numbers guessed with public info

More
Text SizeAAA

Filed under: Credit, Ripoffs and Scams, Fraud

enigma machineWe all know not to give out our Social Security number on social networking and other websites, but new research indicates that it is possible to determine one out of every ten social security numbers knowing only a place of birth and birthdate! In states with lower numbers of births the odds are even better.

Technology has made it cheaper and easier than ever for others to find out when you were born, but sadly it won't be to send you a present on Facebook. The study points out that birth information can be found on numerous social networking sites, or purchased cheaply, for "almost every adult in the United States".

Even worse, most credit card issuers will still process an application even though two digits of a Social Security number are wrong, as long as the birth information is correct. Hackers who know how to use this prediction method may succeed up to three out of ten times in guessing the Social Security number of people born in the 25 least populated states. The lax standards of the credit card companies makes their job even easier.


The study estimates that in a large-scale attack in a small state like West Virginia, criminals could, "harvest credentials at rates as high as 47 per minute, obtaining ~4,000 credentials within 2 h(ours) before his or her IPs are blacklisted." After being blacklisted, the attacker could simply rent another group of infected computers for as little as $1,000 and keep going.

The study also suggests that the ability to accurately predict the first five digits for six out of ten Social Security numbers could lead to new, more targeted email scams in which the scammer would include the first portion of the victim's social security number to gain trust and obtain more personal information.

Unfortunately this isn't any easy problem to fix; even if the government randomized all digits of new Social security numbers, as the authors suggest, it would still leave the rest of us with predictable and therefor vulnerable social security numbers. Yet another reason to check your free annual credit report regularly.
Subscribe to Walletpop

Reader Comments (Page 1 of 11)

Your Frugal Tips

dollar bill in sandwichBeing frugal is now hip, but many don't even know where to start. Share your best money-saving secrets here!

    AOL Safeguards

    Laura Heller
    Laura Heller Filed under: Shopping, Economizer

    The best and worst return policies of the holiday season

    Spending time with family is one thing, but spending a lifetime with that sweater your Aunt Emily gave you for Christmas is another. Before you head back to the mall with your unwanted items, there ...
    Martha C. White
    Martha C. White Filed under: Banks

    Diet for fat-cat bankers an illusion

    As another year of jobs lost, homes foreclosed and budgets cut draws to a close in America, some of Wall Street heftiest fat cats are tipping the scales with their bonuses -- and pocketing your tax ...
    Andy Miller
    Andy Miller Filed under: Health, Insurance-health

    A black hole in health insurance

    At 63, Billie Hoke is two years and a ton of worry away from the health care goal line. She will have to wait until 2011 to join the millions of Americans in the Medicare program for people 65 and ...
    Kelly Phillips Erb
    Kelly Phillips Erb Filed under: Retire, Retirement advice, Taxes-income-tax-basics

    The rush to convert: Why 2010 will be the year of the Roth IRA

    Think of 2010 as the year of the Roth IRA. Beginning January 1, the rules governing who can invest in a Roth will be modified, allowing anyone with an existing traditional IRA to take advantage of a ...

    Headlines from WalletPop Partners

    How to Serve Cheese
    Everyone loves cheese, but do you know how to compose a cheese plate? What cheeses go well ...
    Too Many Sweets Will Impair Your Immunity
    It doesn't matter what time of year it is, sugar and sweets always seem to be in abundance. Cookies, ...
    Learn More»