What is lsass.exe? 5 ways to see if it’s safe.

What is lsass.exe?

lsass.exe is a Windows process that takes care of security policy for the OS. For example, when you logon to a Windows user account or server lsass.exe verifies the logon name and password. If you terminate lsass.exe you will probably find yourself logged out of Windows. lsass.exe also writes to the Windows Security Log so you can search there for failed authentication attempts along with other security policy issues.

lsass.exe Microsoft Windows lsass.exe Properties

Publisher: Microsoft Windows

lsass.exe stands for Local Security Authority Subsystem Service.

What does lsass.exe do?

lsass.exe controls all Windows security system policies and authentication.

Is lsass.exe safe? 5 easy ways to see if lsass.exe is safe or malware.

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Why does lsass.exe access the network?

While investigating lsass.exe with the GlassWire network security monitor on our devices based in Austin, TX USA we found a connection to a server controlled by a popular web browser called Opera am4.autoupdate.opera.com. This network activity appears to be normal behavior because we learned that lsass.exe is used to check website certificates and validate them. lsass.exe is also used to revoke bad website certificates. On our testing computer we had the Opera web browser installed.

App All apps 400 KB/s lsass.exe am4.autoupdate.opera.com 24.3 KB 65.2 KB 26 Jul 27 Jul 28 Jul 29 Jul 30 Jul 31 Jul 1 Aug 24 Hours Week Month 3 Hours 5 Minutes All Apps Traffic Graph Usage Things Firewall Alerts GlassWire lsass.exe GlassWire Control S… Host Process for Wi… 642.9 KB 386.6 KB 129.4 KB 48.4 KB 90.1 KB 21 KB 727 B 30 KB Windows Explorer 31.3 KB 6.7 KB Background Task H… Spooler SubSystem… Device Association F… 24.7 KB 48.4 KB 6.4 KB 16.3 KB 12.2 KB 30 KB Download/Upload H… System 48.4 KB 16.3 KB 12.2 KB 30 KB

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