Since new viruses are created and released daily, the antivirus program must update its database frequently.

因为新病毒天天创建和发布，反病毒程序必须频繁地更新其(病毒特征)数据库。

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If the antivirus program is out of date, you will need to update it.

如果杀毒软件是过时的，你将需要更新。

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Since it is very difficult to avoid the virus, your best defense is a powerful antivirus program.

由于很难避免病毒的攻击，最佳的防范措施是安装强大的防病毒程序。

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But no matter how good your antivirus program is, if you open a suspect email, you make yourself vulnerable to Trojan horses that steal email and bank-access information.

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"Although the conditions to be checked may change over time, current experience suggests that such health checks should ensure that software patches are applied, a firewall is installed and configured correctly, an antivirus program with current signatures is running, and the machine is not currently infected with known malware, " he wrote in the accompanying paper.

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Many feel that patching tools, a regular and fully automated backup program, and a strong recovery toolset are more effective in dealing with the risk than antivirus software.

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