As a Navy physician trying to get IRB-approved research done, could you kindly share what kind of app needs a lone developer to have 134k SSNs on a laptop?
There are lots of very legitimate reasons, but a very common example might be vendor upgrades of core software for coding, integrations, dictation, etc. Fairly standard procedure to do (at least) a one off just in case backup of a database before running a big code update.