Worried that someone's remotely spying on your Mac? Blogger Jacob Salmela shares a tip for monitoring VNC and SSH ports using GeekTool so you're alerted if someone tries to peek in.
Salmela's guide creates buttons that rest in your menubar and monitor your screen-sharing port and your SSH port. If someone tries to spy on you, the buttons blink and an alarm sounds. The process itself is super-easy to do, and the constant monitoring should make you rest easy knowing nobody's trying to get a look at your files. Head over to Salmela's site for a full guide.
How to Tell If Someone Is Spying on Your Computer Using GeekTool [Jacob Salmela]