Firewall/Desktop. Check Point Software Technologies is an even bigger winner in this firewall category. Its Zone Labs' ZoneAlarm and Check Point Integrity SecureClient took the top two spots. ZoneAlarm identifies hackers (and lets you report them to ISPs) and blocks access attempts. It also stops pop-up ads, prevents adware from untrusted sites from being installed on your computer, and scans your hard drive for adware cookies and lets you easily delete them. ZoneAlarm quarantines suspicious incoming email attachments and blocks outbound messages containing potential viruses. Check Point Integrity SecureClient ensures that only secure PCs gain access to the corporate network via Check Point VPN-1. Its desktop firewall, program controls, and intrusion prevention features stop worms, spyware, and hacker attacks.