On Windows 10, can programs read saved wifi passwords behind my back?

Solution 1:

Yes, this can be done.

At an Admin Command Prompt, type:

Command Prompt: netsh wlan show profile name="Profile Name" key=clear to see password

and you can get the WiFi password.

It depends on the attacking program, but the information is there if the program has the capacity.

So, probably you are OK, but be careful what is installed.

I have tested this here on Windows 10 Pro. It also works on Windows 11 Pro.