http://keybase5btp2qikoau6u326pvotn47gb55mo6fjxxyxdoywiinomr5id.onion/blog/2014-10-08/the-horror-of-a-secure-golden-key
Take Mary Winstead’s word for it. Bugs and tape backups often keep things around, regardless of the law or programmer effort. This is one of the single hairiest technical problems of today. Instead, how can you burn that digital love letter, or tear up that digital picture?