Microsoft has released a Windows Update to address a critical security problem in Internet Explorer that came up a few days ago that allows a variety of keyloggers, trojans, etc. to invade PCs. As it’s an exploit, the payload (the evil stuff that gets force fed into the browser) can be anything.
How to update your Windows
Here are details and links to the updates.
Of course you can also go to Start / Windows Update.
Update your ZoneAlarm if necessary
In our tests we found that ZoneAlarm Internet Security Suite blocked many, if not all, of the trojans with the network firewall and OS Firewall.
Make sure to update your antivirus and anti-spyware in your Internet Security Suite if need be:
1) Open your ZoneAlarm product by double-clicking the icon in the lower righthand corner.
2) Click Anti-virus / Anti-spyware on the left.
3) If you see red "update" links, click them to update.
If you have problems please go to ZoneAlarm user forums where you’ll find some helpful people to answer your questions.