Millions of people around the world use ZoneAlarm Free Firewall. Our free software blocks hackers and prevents viruses & spyware from stealing your personal data and sending it out to the Internet. Also, works great with any antivirus software.
  • Free protection against hackers and spyware
  • Effective and quiet security that won’t slow you down
  • Easy for anyone with new quick install and simple interface


ZoneAlarm is FREE for individual and not-for-profit charitable entity use (excluding governmental entities and educational institutions). Learn more.