https://xkcd.com/538/ https://xkcd.com/538/ is relevant If you want to be resilient to this stuff, have a program that pretends to delete things, or reveal all

https://xkcd.com/538/ https://xkcd.com/538/ is relevant If you want to be resilient to this stuff, have a program that pretends to delete things, or reveal all your data, but in fact requires far more authentication (and delays) to permanently delete, or reveal additional data. But that means you need the decoys to be very believable. Most of these authorities aren't going to dig further, and anyway they can't make you prove a negative. For example, TrueCrypt and VeraCrypt have hidden volumes: https://veracrypt.eu/en/Hidden%20Volume.html https://veracrypt.eu/en/Hidden%20Volume.html