The ZoneAlarm family of security software expanded on Monday as Check Point debuted three 64-bit-compatible versions of their flagship software. The company also launched an all-in-one version of ZoneAlarm combining the line's firewall, anti-virus, anti-spam, and anti-spyware tech with online backup capabilities.

ZoneAlarm Extreme Security, the new suite, builds in a few features that should add a layer or two of extra security, particularly on machines piloted by the unwary and click-happy. ForceField, a virtualized browser security application introduced last year, keeps an eye on sites visited and flags things that seem dicey -- the "banking site" that isn't what it appears to be, for instance. The package also includes protective features such as (optional) private-key encryption capabilities and system-maintenance and online backup tools for tending one's more critical data.

A three-year license for ZoneAlarm Extreme Security costs $70. The software can be downloaded from the site, and a 15-day trial version is available if you prefer.

Extreme Security comes in 32- and 64-bit versions. In addition, Check Point announced Monday that ZoneAlarm Internet Security Suite, ZoneAlarm Pro and ZoneAlarm Antivirus also have new 64-bit Vista versions available.

This marks the first commercially available ZoneAlarm edition that works with the 64-bit Vista kernel, whose security model is very different from that of the 32-bit kernel. However, the question remains whether Check Point has acted in time to plug a customer leak among high-end client OS users to new competitors such as Comodo.