I never used anti-virus in Windows. Once I was happily searching the web for a solution to programming problem and a windows-like very good looking dialog popp

I never used anti-virus in Windows. Once I was happily searching the web for a solution to programming problem and a windows-like very good looking dialog popped up asking me something I could not answer no. All of a sudden my computer became unusable and, as fast as I could, I turned my router off. Then started a two hours fight to find what happened and solve the problem. Some Java code installed some things when I clicked yes in the dialog. I was using a vulnerable Java runtime, which had been recently exploited. I still don't use anti-virus in Windows. But I turned the Java plugin off. And now I use more Linux to do web development.