A group of security researchers announced this morning that some HP laptops and desktops are shipping with an audio driver that includes a keylogger that logs all keystrokes to a local file. This includes potentially storing passwords and other sensitive data in a plaintext file that can be read by anyone on the system.
Indications are that this is debugging code that was left on unintentionally rather than a malicious actor, but it’s still a risk.
To see if your HP system is vulnerable check to see if C:\Windows\System32\MicTray64.exe or C:\Windows\System32\MicTray.exe exist on the system.
For detailed information see the original writeup