Get Microsoft Windows Defender Free. It is one and only virus and spyware protection tool from windows which secures your computer from dangerous and malicious threats and viruses which slows down the perfrmance of your machine.
hen Windows Defender is on, you’re notified when spyware or other potentially unwanted software tries to install itself or run on your computer. If you use the default settings, Windows Defender also checks for new definitions (files that are used to determine if software is spyware) and automatically removes any detected item that has a recommended removal action. For more information about Windows Defender.
From Microsoft: Windows Defender is software that helps protect your computer against pop-ups, slow performance, and security threats caused by spyware and other unwanted software by detecting and removing known spyware from your computer. Windows Defender features Real-Time Protection, a monitoring system that recommends actions against spyware when it’s detected, minimizes interruptions, and helps you stay productive.