Local Security Authority Subsystem Service

By Author: Jamie Hanson
Total Articles: 3495
Comment this article

Lsass.exe is a functional part of the operating system from Microsoft Windows. The full form is local security authority subsystem service. It assists in the procedure of maintaining as well as implementing the security measures of the Windows operating system.

This system basically works on preventing the unauthorized users to access the functions and applications of the computer and they also put a stop to the harmful virus that can cause severe injury to the operating system.

Functions of lsass.exe
There are different security related functions that lsass.exe accomplishes perfectly. They control the access of the system and take care that no unauthorized user can intrude into the applications. They keep watch on the login details and other codes that are being inserted in order to use or unlock the computer and match them with the instructions that is already there at the hard drive of the computer or in the server.

If there is slight mismatch they will not allow the user to get through with the login process. They are the one who monitor all the alterations and changes that are being done on the ...
... passwords and access codes. Lsass.exe makes sure that all these are performed by the authorized person and no one else. Whatever changes are made, all get recorded by the Windows Security Log.

Lsass.exe and virus
There is a particular worm virus called Sasser Worm which causes overflowing of buffers. These worms can spread easily from one computer to the others which are somehow connected to the infected one. There are certain procedures to remove these worm viruses from the Lsass.exe without hampering any of the system functionalities.

In order to remove them the Lsass.exe will show up a message to the user to save their work and within a few minutes the computer shuts down for rebooting and removal of the worm with software. Lsass.exe basically deals with the local connections and login details of the computers.

But according to some people Lsass.exe can download the spyware and other virus to the computer and harm the functions. Often it is said that Lsass.exe is synonymous to Trojans which allows the remote accesses to harm your computers introducing the virus files or by deleting the important logging details. So never forget to keep your computer equipped with a strong antivirus and run the virus scans to make sure that there is no risk of Lsass.exe error for your computer.