I had it installed on my Win 7 laptop for the past five years. It was a program that did alot to make you feel like it was protecting you, such as displaying a pop-up whenever:
- An app tried to connect to the internet
- An app tried to execute or communicate with another app
- An app tried to modify the registry
- An app tried to read keyboard/mouse input
Part of it could be rather annoying (particularly when some applications like Crashplan would try to auto-update and fail during the night because I wasn't at my keyboard to approve the connection attempt that Comodo blocked), but it did feel secure. After the last Comodo gaffe[0], however, I finally said enough and uninstalled Comodo Internet Security and went with GlassWire instead for my firewall.