ZoneAlarm is free and useful firewall to detect, prevent intrusions and keeps your PC free from viruses that slow down performance, it also has ability to blocks someone who try to infiltrating your home PC by hiding your computer from unsolicited network traffic and prevent from spyware that steals your personal information, passwords, and financial data.

ZoneAlarm Free 9.1.007.002 comes with new interface makes it even easier to use and smaller size keeps it light. download it from filehippo.