Combating viruses with security software

https://www.mediafire.com/file/hmsl9m6vs33zfrp/pdf-92012-56911.pdf/file

Combating Viruses with Security Software<br/>Help, I was sitting in front my computer and it starting acting strange! Pop-ups were on my screen and I was not even surfing the web. My home page was changed somehow and so did other web settings