Top Definition
programs that help protect a computer from unwanted malware, bots, trojans, spyware, and invasions. Firewalls, antivirus programs and search and destroy protective software are all examples of cybercillin.
My computer picked up some kind of horrible bug and won't even boot properly now. I don't know how this happened, because I had good cybercillin running on it.
by petuniafarmer January 31, 2009
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