windefend - Necessary

windefend

Improve boot up time Run a free scan to diagnose your PC and identify the system boottle necks slowing you down. Start Test

Fix Windows PC's Fast! Automated Software Repairs damaged & slow windows systems in 1 click.

Description:

windefend
%WinDir%\System32\svchost.exe -k secsvcs is related to Microsoft Windows Vista.
WinDefend system service - Windows Defender.
Scan your computer for unwanted software, schedule scans, and get the latest unwanted software definitions.