I can't remember the link to the article, but a few years back a researcher had published a paper on the security of SSNs. It outlined how the first 3 numbers

I can't remember the link to the article, but a few years back a researcher had published a paper on the security of SSNs. It outlined how the first 3 numbers are kind of based on your location of application (like a 3 digit code for a county). next 2 are kind of related to your date of birth. The only hard part was the last 4 digits which are random but easy to get as thats the first thing most companies ask for.