Some HP PCs may be logging user's keystrokes

 The software logging keystrokes has been found on HP PCs so far but to be safer check for a file:

C:\Users\Public\MicTray.log

If found remove this file.  The application that does this key logging is designed to control audio features. Not a good idea and the application appears to be poorly designed and not malware.
HOWEVER malware may use the key strokes logged in this file for nefarious purposes.

To keep the application running and protect yourself, remove the file, create a new file with the same name and set permissions for more restricted access.