Check your processes in the task manager to see what's running. Terminate those that you think might be the culprit.

Keystroke logging is the process of recording every keystroke made on a keyboard. You've probably heard about "keyloggers" ...

In their paper A Practical Deep Learning-Based Acoustic Side Channel Attack on Keyboards (full PDF), UK researchers Joshua Harrison, Ehsan Toreini, and Marhyam Mehrnezhad claim that the trio of ...