Lsass.exe is good - Microsoft component that runs under certain conditions
Isass.exe is the name of a program installed by a Trojan which opens up a backdoor port.
One way to see the difference between lsass.exe and Isass.exe is to click on the "image name" in task manager and see if it it lists with the "L" processes or actually is an I. Changing the default system font also allows you to see the difference between a lower case "L" and an upper case "I" easier.
Windows errors related to isass.exe?
isass.exe is registered as the Optix.Pro virus which carries in it's payload, the ability to disable firewalls and local security protections, and a backdoor capability.
We strongly recommend that you run a FREE online scanner to identify isass.exe related errors. Try using http://safety.live.com this is Microsoft's free one. Do not pay for anything or sign up!
DISABLE AND REMOVE isass.exe IMMEDIATELY. This process is most likely a virus or trojan. It is highly recommended that you run a FREE performance scan to automatically optimize memory, CPU and Internet settings.
Your PC's drivers may be out of date. This may cause hardware failures, conflicts and complete system crashes. We recommend you run a FREE driver scan to easily identify and list outdated drivers on your system.
Last Wiki Answer Submitted: December 22, 2008 2:00 pm by Karl Gechlik9,815 pts.