In the current issue of IRW we explain why facilitating social security numbers (SSNs) online is an enabling crime; one that is relevant to Homeland Security (1). We show that, ironically, government agencies and universities are the first facilitators of SSNs on the Web.

We examined how crafting smart queries in Google and other search engines allows users to find incidents wherein SSNs have been released for the entire world to see online. Althought nothing new, it is a widespread problem across the Web. It is a shame when administrators of the above two offenders (government and university dependencies) ignore the problem or justify it in the name of what is practical.

We show why the common practice of facilitating the last four digits of a SSN is a very bad idea. With SSN Allocation tables, we can map the first three digits to the region wherein the SSN application was filed, by US State and territory. If the last four digits are known, only the middle two digits need to be guessed. Identity thieves and stalkers might be having a field day.

There is still hope, though. We cover how Northern Michigan University (2) and John Hopkins University (3) are proactively becoming part of the solution and not part of the problem. In the case of NMU, they have published a one year case study outlining the full eradication of SSNs as identifiers from NMU campus.


1. The Homeland Security and Terrorism Threat: From Document Fraud, Identity Theft and Social Security Number Misuse
2. Full Eradication of Social Security Number as an Identifier
3. Policy on Social Security Number Protection and Use