ZAKiller Trojan

This malicious application is especially dangerous for those users, who have Zone Alarm firewall installed on their PCs. ZAKiller Trojan acts by killing this firewall's process, but keeping an illusion of its working by simulating a real ZA icon. This technique is really dangerous, because the infected computer losses the protection against many spywares, which can freely connect to the Internet and send private information to hackers.