Know when someone or something is using your computer’s microphone (or web cam). This menu bar app monitors and reports any microphone and camera activity to help you figure out if someone’s spying on you.
Private Internet Access is a popular VPN solution for protecting your privacy while browsing the web. Their app lives in your menu bar from where you can connect to your account and select the preferred server location.
Plug Spy triggers actions in case of unexpected occurrences. Instant notification on you phone will give you additional security if you leave your Mac alone.