content: That's an understandable first reaction, but there's actually truth in what they're saying. For one, see the XKCD comic strip someone linked elsewhere in this thread. Also, there are security technologies and standards made by spy agencies that actually work, are open-source and have been audited by independent third parties for backdoors. SELinux, for example, was initially developed by the NSA. The bad guys (spy agencies, banks, ...) need something that has real security, too.