ZoneAlarm®
Triple Defense Firewall™

Defense 1
Protects your computer from hackers, spyware, and Trojan horses

Our proven stateful stealth firewall guards the network perimeter from inbound and outbound threats.

Defense 2
Prevents bad programs from attacking good programs on your computer

A second firewall layer surrounds each software program, protecting good programs from bad.

Defense 3
Protects the operating system down to the kernel

The third firewall layer goes down to the kernel to protect the operating system - including the registry and file systems - from attack by malicious programs.

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