Take a moment and review any HP laptops at your house or running in your organization.  Those devices may have a functional keylogger running on them and you never knew it.

I am linking two articles.  The second indicates that HP has provided a patch / driver update that addresses this problem.

https://threatpost.com/keylogger-found-in-audio-drivers-on-some-hp-machines/125600/

http://www.zdnet.com/article/keylogger-found-on-several-hp-laptops/