Windows
Defender Beta 2 (Build 1347) Microsoft Windows Defender (formally
known as Windows AntiSpyware) is a security technology that helps protect
Windows users from spyware and other potentially unwanted software. Known
spyware on your PC can be detected and removed. This helps reduce negative
effects caused by spyware, including slow PC performance, annoying pop-up
ads, unwanted changes to Internet settings, and unauthorized use of your
private information. Continuous protection improves Internet browsing
safety by guarding more than 50 ways spyware can enter your PC.