While using Mozilla Firefox to browse the Internet, I suddenly got a pop-up window followed by a dialogue which appeared to be prompting me for my Microsoft credentials. It was accompanied by an audio announcement proclaiming that I might be the victim of ransomeware. Under the circumstances, I concluded that providing my credentials would not be prudent. Instead, I chose to restart the system. While the system was coming up – I can't remember whether it was before or after I logged in – a message appeared on the screen indicating that two files were being removed from Programs.
While under an apparent attack, I guess I could have lingered longer in order to collect more information. Instead, in order to minimize the damage, I chose to bail out as soon as possible. Whether this was a genuine attack or a farce, I could not tell you. I guess I'm wondering a couple of things. Are there Windows logs I can check to determine what might have occurred? In particular, I'm interested in finding out what generated the message indicating that two files were being removed from Programs.
I generate a backup of the system disk on a nightly basis. So, in the event something bad has actually happened, I can restore the system to a previous state.