Agnitum Outpost Security Suite Free (64-bit)

Proactive protection against online and offline threats - anti-virus, anti-spyware, firewall, anti-spam, and more - totally free. All-in-one malware defense and powerful data leak prevention combine to deliver bullet-proof PC security for individuals and families. New ver. 7.1.1 adds System and Application Guard to protect your operating system and installed software against hijacking. It's the 1st completely free fully-functional security suite