Can a website knows the programs that are running on my pc?
Solution 1:
As far as I know, no. However other things can be detected, such as:
- OS + version
- screen resolution, color depth
- browser + version
- plugins installed
- location
- installed fonts
- detect browser window size
- record keys pressed
- detect if window has focus or not
If last ones are implemented into the website, it could detect if you alt-tab. Or if you're opening the website inside a virtual machine.