html filter/XP Office bug

Kdo pozna nacin, kako filtrirati strani? Neke vrste firewall bi rad, ki iz htmljas pobere dolocen string. Ce to sploh obstaja, bojim se da ne.
Zakaj?
Systems affected:
Win2K + IE 5.5 SP1 fully patched + Office XP.
It was reported to work with IE6 beta also.
The problem is again ActiveX. This time Office XP seems to install a malicous ActiveX control - "Microsoft Outlook View Control".
This control exposes property named "selection" which gives access to user's mail messages. It also exposes the Outlook "Application" object which may lead to execution of arbitrary programs of the user's computer.

Varianta je, da bom odlsej bolj pazljiv in bom se bolj uporabljal Mozillo, ki je odporna (moram bookmarke tja prestaviti).