Beyond the existing answers, also look at how existing records are stored. You can use FOIA to get the keys needed to unlock access to government weapon stores

Beyond the existing answers, also look at how existing records are stored. You can use FOIA to get the keys needed to unlock access to government weapon stores (Defcon had presenters who talked about this). How many times have governments been hacked and had financial data stolen; that could have just as easily been some of those keys.