: Use the Command Prompt (as Admin) and run netstat -b -n . This shows active network connections and which programs are sending data to external servers.
In the 1980s, the KGB deployed a primitive but effective hardware keylogger called SOVA (Owl). It was a small capacitor device inserted between the typewriter (and later, the EC-1840 computer terminal) and the wall outlet. SOVA recorded every keystroke, including backspaces and deletions.
