ZoneAlarm are offering their product ForceField for free between 12th and 13th August, so get it quick :D
The licence key is valid for one year.
Product Details -
"Get Complete Browser Security with ZoneAlarm ForceField
Works great as an extra layer of protection to any security product
Protects your identity by blocking phishers and stopping keyloggers
Blocks unauthorized downloads and software installations
Erases your surfing history for complete privacy"