# Tweet by [@keefmoon](http://twitter.com/keefmoon) on 2013-12-21 12:00:55 > [!INFO] Archived from [original tweet](http://twitter.com/keefmoon/status/414364856775892992) RT @brunns: RSA leave a back door for the NSA: http://t.co/0uBiXiMJoR Lesson? You can only really trust open source security software.