ZoneAlarm Internet Security 2013 - free
ZoneAlarm has two-way firewall that operates quietly in the background, monitoring incoming and outgoing traffic to and from a PC and the Internet. It blocks hackers from getting into a PC and stops them from launching attacks, stealing information, and sending data back to their home servers to conduct malicious activities.
ZoneAlarm comes with a powerful antivirus engine scan which detects, and removes any malicious programs. To further insulate a user’s system, ZoneAlarm’s OSFirewall adds an additional layer of protection by spotting and stopping any suspicious behavior and new attacks.