ZoneAlarm pioneered the personal computer firewall used by over 60 million people worldwide, and our parent company, Check Point Software, invented the enterprise firewall used by every member of the Fortune 100. We know how to keep the bad guys out.

#1 Firewall
Proactively protects against inbound, outbound, and program attacks while making you invisible to hackers.
Inbound & Outbound – monitors and blocks threat traffic in either direction.
Full Stealth Mode – makes you invisible to hackers.
Kill Controls – instantly disable malicious programs .
Passes Independent Leak Tests* - to verify complete blocking, see test results.

Anti-Spyware
Award-winning anti-spyware automatically prevents, blocks, and removes spyware.
Spy Site Blocking – prevents accidental visits and malicious communication with spyware sites.
Kernel-Level Spyware Prevention – protects at the operating system level.
Hourly Signature Updates , expanded coverage, and faster detection to find and remove aggressive viruses.
Inbound and Outbound MailSafe - quarantines suspicious attachments, stops harmful messages before viruses transmit to your computer.
Expanded coverage - catches certain kinds of spyware like adware that others ignore.