[Eric21]

Go for Comodo Antivirus which is very good in safeguarding your pc from al kinds of attacks.

[Stewie™]

Personally I use Avira Free AV & Malwarebytes for virus scanning, and ZoneAlarm Firewall.

[Que.]

Firewall:

Comodo's Firewall

AntiVirus

ESET Smart Security

Backup Scanners

1. SuperAntiSpyware
2. Malwaresbytes

Most Important

Use your brain.

That's a setup whitch i recommend.

[zCRYPTOGRAPHYz]

I use Avira Internet Security for antivirus and firewall and I also use malwarebytes and sandboxie and obvcourse a virual machine.

[Luikkari]

I'm using Avast free version, Malwarebytes paid version (Got serial key from internet. Very easy.)

[CR0.S2S]

You dont even need AV if you dont download shit like me :)

[PawKy]

I Recommends avast free and anti-malware