You can use certificates to protect your personally identifiable information on the Internet, and to protect your computer from unsafe software.

可以使用证书保护Internet上的个人识别信息，并保护计算机不受危险软件的攻击。

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Protect your computer against hacker attacks and intrusions while surfing the Internet.

保护计算机免受黑客攻击和入侵，让你在网上安全冲浪。

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Protect Your Computer. Install a virus protection program and once a week do a virus scan and spyware check.

保护好你的电脑。给你的电脑装上杀毒程序，每周做一次病毒和钓鱼软件的查杀。

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They offer to protect your computer against known exploits, blocking attacks as they happen.

FORBES: Study Shows Programs Designed To Catch Hackers' Exploits Miss Nearly Half

There are three main things you need to do to protect your system and stop your computer from becoming part of a botnet.

BBC: Gaining access to a hacker's world