If the spooks come to your door, be sure and ask them for their business cards (yes, really) so you know who is really is asking you those nosy questions. And don't let them in without a warrant.
Finally, you have virtually no privacy rights at work — and yes, your employer is logging everything. If you want to Google topics of interest, better to do it on your own time and from your own machines.
Remember: Even if the NSA isn't watching you, somebody else may be.
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