There was an unknown network adapter in my device manager. I found out it was for a USB-RJ45 ethernet device, which I have never even seen before. This device was not present when I bought the machine. As far as I have researched, it is not installed by any software or devices I use.
I’m concerned because there is a known vulnerability in Windows that’s exploited using these devices. A malicious person with access to the device could have stolen my credentials and logged in. (Google Usb-ethernet windows vulnerability if you don’t believe me.)
I believe the police or another malicious party exploited that vulnerability, and they used it to install a keylogger and acquire my hardware info. Is the presence of this device suspicious enough, from an information security standpoint, to support my belief? What would you do if you discovered the same on an enterprise machine?