With ZoneAlarm Pro You Get:

Network and Program Firewall. Delivers proactive firewall protection with multiple layers of security that stop inbound, outbound, and program attacks while remaining completely invisible to hackers.

Operating System Firewall (OSFirewall™) . Protects your Windows operating system from attacks all the way down to its core.

Anti-Spyware. Scans for and removes thousands of spyware traces from your computer.

SmartDefense™ Service. Provides your PC with real-time security updates and new attack protection capabilities.

Identity Theft Protection. Secures your private information on your PC, on the Internet, and in the physical world. Free services help you discover and recover from identity theft.

Email Security. Quarantines suspicious email attachments and blocks outbound messages containing potential viruses.

Automatic Wireless Security. Automatically detects wireless networks and secures your PC from hackers and other Internet threats.