However, once I rebooted, I found that my internet connection was not working, saying that "connection to the proxy server was refused". I found, strangely enough, that certain websites could still access the net - my stock trading brokerage website, and my online banking websites. I found this very suspicious and did not log in to any of those websites.
I dug around and found out that my internet settings on my browser had been modified from "use no proxy" to using a certain proxy with a specific IP address. My question is - did I almost get scammed? And now that I've reverted back to no proxy and deleted the specific info on the proxy server, is it safe to go back to logging in? I've run several antivirals and ad-aware, and they've all come up clean. I have a plethora of different passwords, none of which I typed in while the computer was compromised. Should I still change them?