Source

from an EMail :

not sure how old this is, but I haven't seen it posted, and it's ANOTHER nasty .........

Name: Haxdoor (F-Secure)
Affects: Windows XP/XP SP2/2000/2003
What it does: Haxdoor is a backdoor program that can be used to steal confidential information like passwords and financial account credentials. As reported recently by F-Secure, it uses rootkit techniques to hide itself, making it difficult to detect except by anti-virus programs that have kernel mode drivers and anti-rootkit programs that know specifically what to look for.
Haxdoor's extraordinary access to the network code in the system presents a threat to the integrity of HTTPS, the encrypted standard for communications normally used by banks and other sensitive web sites


I would be quite interested to find out HOW people do this, the intentions of use, not withstanding, I just can't imagine what you have to have, to figure this stuff out ....

Maybe that's gonna be MY limiting factor in IT advancement

These techniques are written specifically for Internet Explorer and appear not to work against other browsers, such as Firefox.
HoHum