What's the safest, most secure way to store sensitive images/videos
Images/videos that you don’t want anyone else to see beside you and the subject of the images
Take them with a film camera, develop them in a darkroom at home, make a single print you carry with you in a secured pouch that you swallow and excrete every few days. And then destroy the negative.
Or just keep them offline on an external HDD and encrypt them with a reasonably long passphrase only you and the subject know.
in a disk, in a safe, in a bank, not sure in which country, maybe the vatican?