lsass.exe

lsass.exe

Is a important part of your Windows operating system.

LSASS stands for Local Security Authority Subsystem Service and it is mainly used to help Windows manage security and logins. It can usually be found in the C:/windows/system32 or C:/winnt/system32 folder, depending on which version of Windows you use on your computer.

In 2004 a virus called Sasser caused people to worry that this virus was related to the lsass file and when they saw it in their task manager, they figured they were infected. This was not always the case.

It is unlikely that Lsass.exe will ever harm your computer 