Download Windows Defender 1.1.1593

Windows Defender 1.1.1593

Windows Defender is a free anti-spyware software from Microsoft which helps protect Windows from the infection of spyware and other unwanted malicious software.

Updated by SpyNet, an online community for Windows Defender dedicated to reporting and investigating malware infections on an on-going basis to keep Windows Defender's spyware definition database up-to-date.

These definition updates are downloaded from Windows Update with your system's regular updates. So you don't have to worry about manually checking for updates with your regular anti-spyware software and you can run Windows Defender in addition to other anti-spyware software for increased malware protection.