The number of stealth techniques found in malicious software surged 600 percent in the past three years, according to data published last week by McAfee. And the pace of change is accelerating, driven by developer interest and online forums, say experts. Rootkit.com has more than 42,000 members and active forums that are pushing the evolution of rootkits, according to Jamie Butler, CTO of security firm Komoku, who helped create rootkit.com.

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