Anti-virus software is an anti-pattern in general. Having more bugs and backdoors than the rest of the applications combined. I havent been using anti-virus for the last 5-10 years I have just a simple rule set for using internet and it proved to be sufficient for me. However, I have many friends with anti-virus softwares and they still got viruses on their systems. I guess this is anecdotal evidence but I would like to see a comprehensive study on how effective anti-virus systems are.

https://googleprojectzero.blogspot.hu/2016/06/how-to-comprom...