Here's another journalist who believes that the SSDI could be useful to identity thieves.
I was doing a little genealogical research and found my father’s Social Security number in three seconds on Google. (SSNs of dead people are most coveted by thieves.) So one must say the horses already are out of the pasture. These security rules create a false sense of security where there is none. [Link]If the writer is referring to the SSDI, those dead horses are very much still in the pasture. As I've noted before, the SSDI (or "Death Master File") is used to prevent identity theft by letting financial institutions know which SSNs are no longer in service. Valid SSNs are distributed to thieves by an entirely different government agency.