Normally I'd call that paranoia. But after reading about the case in which a Goldman Sachs programmer aroused suspicion [0] from the FBI for using "Subversion" and occasionally erasing his "bash history", I think it's reasonable to remember that anything you say can and will be used against use in the eyes of the law

[0] http://www.vanityfair.com/news/2013/09/michael-lewis-goldman...