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Windows Defender是微软出的安全软件，有助于防止间谍软件和其他可能有害的软件
Windows Defender is a security software application that protects your Windows Operating system against spyware, malware and other software that is considered dangerous by preventing, removing or quarantining them.
If you’re a hardcore Internet surfer, then you definitely require additional security technology when you expose your computer to a multitude of unnecessary popup ads, undesired automatic changes to Internet settings, and anything that can slow down the performance of your operating system.
