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Six Tips for Surviving a Cyber Security Threat How to thwart threats to your company's computer system.

By Ericka Chickowski

Opinions expressed by Entrepreneur contributors are their own.

You can lower your risk by slimming down what online security pros call your "attack surface." And that means going beyond simply installing anti-virus software.

Don't assume partners have your back. If you depend on outside sources for technical firepower--outsourced services, cloud solutions and the like--come at it with eyes wide open. "Many business owners think their web hosting provider is taking care of the security of their website," says Neil Daswani, co-founder and chief technology officer of security firm Dasient. "Not so. At the low monthly fees at which many hosting services are made available, the web hosting provider does not scan the websites for vulnerabilities or malware."

Related: Cybercriminals: A Look at Their World and Their Threat to Business

Serve up a safe site. Often malware distributed online is spread through legit websites. Criminals scan the internet for vulnerabilities in web applications and install bits of inconspicuous code into the site's server that infect users when they visit that site. Unfortunately, small-business sites are favored for such sneak attacks. "Those things are typically caused by small businesses not having the software on the server patched and up-to-date," says Chester Wisniewski, senior security advisor at security firm Sophos. Crooks also infiltrate third-party advertising companies, infecting code or setting up shell companies to dupe businesses into placing "malvertising" on their sites. According to Dasient, in the last quarter of 2010, 3 million malvertising impressions were served to consumers each day.