安装杀霉软件。(2)这样可将已知恶意程序拒之门外，以防黑客窃取个人信息。

Install antivirus software. (2) This can protect a computer against known malicious programs that could allow a hacker to steal personal information.

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事实上，它是为黑客侵入系统大开方便之门。

In fact, it is to be a hacker to invade a system to open convenient door greatly.

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