ZoneAlarm Pro combines multi-layered Firewall security with robust Anti-Spyware that protects your PC and your privacy on the Internet. Firewall protection renders your computer invisible to hackers to keep intruders out. Anti-Spyware detects and removes hard-to-find spyware at the deepest levels of your operating system. And our real time Identity Theft Protection services monitor and repair all suspicious activity linked to your online identity, for enhanced security when surfing and shopping on the web.