I know that one but that was just speculation, there was no proof that having a variable called NSA_KEY in your code is an automatic proof of a backdoor. Heck,

I know that one but that was just speculation, there was no proof that having a variable called NSA_KEY in your code is an automatic proof of a backdoor. Heck, I can prefix all my variables with 'NSA' for the shits. Backdoors do exist but they're usually disguised as bugs, not so obviously in-your-face like that.