What was your first antivirus?

I really can't remember exactly but yes very minimal GUI but very effective for that period
this one as v2 all shared same ui and the MONs...

NOD32-Antivirus-System-2.5-3.jpg
 
When we bought our first computer in the family back in 2001, there was Norton AV installed on it. After two years, I switched to AVG free. In 2007, I used panda AV for about 5 years, then Avast for some months, Panda again and then Norton 360 till now. :)