You may have heard about a very large data breach, exposing the Social Security numbers of three billion individuals. Now hang on. Social Security numbers are a particularly American data point, and last time we checked there were quite a few Americans shy of even a half of a billion’s worth. As [Troy Hunt] points out, there are several things about this story that seem just a bit odd.
First up, the claim is that this is data grabbed from National Public Data, and there’s even a vague notice on their website about it. NPD is a legitimate business, grabbing data on as many people as possible, and providing services like background checks and credit checks. It’s not impossible that this company has records on virtually every citizen of the US, UK, and Canada. And while that’s far less than 2.9 billion people, it could feasibly add up to 2.9 billion records as was originally claimed.
The story gets strange as we consider the bits of data that have been released publicly, like a pair of files shared with [Troy] that have names, birthdays, addresses, phone numbers, and social security numbers. Those had a total of 2.69 billion records, with an average of 3 records for each ID number. That math is still just a little weird, since the US has to date only generated 450 million SSNs and change.
So far all we have are partial datasets, and claims on the Internet. The story is that there’s a grand total of 4 TB of data once uncompressed. The rest of the details are unclear, and it’s likely to take some time for the rest ..
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