• 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.
  
  
• Powerful 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.
  
  
• Email Security. Quarantines suspicious attachments to help defend against unknown viruses; automatically halts outbound messages to keep you from accidentally infecting others.
  
  
• Wireless PC Protection. Automatically detects wireless networks and secures your PC from hackers and other Internet threats wherever you're connected - at home or on the road.
  
  

ZoneAlarm Anti-Spyware System Requirements:
Windows 2000 Pro/XP. Pentium III 450 MHz or higher. 50MB of available hard disk space. Internet access. Minimum system RAM: 64MB (2000 Pro), 128MB (XP).