Norton Personal Firewall defends against malicious hacker attacks, unauthorized intrusions, and attempts to access your personal information without your knowledge. What does Norton Personal Firewall safeguard? Ultimately, your peace of mind. While you do whatever you want on the Internet¨Cdownload a year¡¯s worth of family photos, play online games, write the history of electric toasters¨CNorton Personal Firewall works quietly by your side, stopping hackers automatically, hiding your identity, and blocking online intrusions. Equally key, it starts doing its job the moment you install it.