I use Avast and comodo internet security. I want to create few apps to android. Plus I am interested in ehr susytem. The development of this kind of software helps substitute the paperwork. So antivirus very improtant to web developers
I'm totally fine with build-in security in Windows since Windows 7. No need for even more resource hungry and privacy concerning software. I'm using only a few Windows systems to be honest but also never had a real security issue.