ZoneAlarm Forcefield offers an extra layer of protection while browsing the Web by protecting users from spyware and phishing sites. While it did successfully notify us of suspicious content, we wouldn't rely solely on this program for protection.
Oddly, though the program claims to be free, a prompt appeared asking us if we wanted to buy now or continue the trial. Aside from this, we found the user interface very straightforward to operate. A toolbar appears in your IE window that can be minimized. There, you'll find a drop-down menu containing links to the publisher's Web site, as well as settings that include checking for updates, confirmation messages, and startup options. Beyond that, you'll find a shortcut button that displays protection activity, a button that displays individual site protection status, and a button that opens a private browser for surfing the Web without leaving any traces. As we browsed, we repeatedly checked our protection status, and indeed the program notified us of possible harmful data that was blocked. The private browser also appeared to let us browse undetected.
Unless you're a computer guru, most users are just going to have to take the program's word that it blocks suspicious content; there isn't much indication of what it's doing behind the scenes. But as long as you have your bases covered in terms of virus protection, this program is a nice addition to keep you safe.