Comodo Internet Security is by far the best free security. Their anti-virus is in need of some work. However, Comodo is not exactly tech friendly. It has lots of pop up alert asking for your permission. A good alternative is Zonealarm. Avast is a good product but some good alternatives are Avira and AVG. Malwarebyte is a must
I thought it is friendly, unless the alerts are set to the high level : )
Nobody needs to know that FW blocked some website, right?