Windows Defender 1.1.1593

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.

A dedicated team of Microsoft researchers continuously searches the Internet to discover new spyware and develop methods to counteract it.
A voluntary, worldwide network of Windows Defender users helps Microsoft determine which suspicious programs to classify as spyware. Participants help discover new threats quickly and notify Microsoft analysts, so that everyone is better protected. Anyone who uses Windows Defender can join this network and help report potential spyware to Microsoft.
To help protect your computer from the latest threats, you can choose to have updates that counteract new spyware automatically downloaded to your computer.