According to Symantec's latest Intelligence Report, 72 percent of all e-mail borne malware this month was identified as generic polymorphic malware variants, up from 23.7 percent in July.

"Commenting on the September statistics, Paul Wood, a senior intelligence analyst with Symantec, said that the unprecedented high-water mark with polymorphic malware underlines the nature by which cyber criminals have escalated their assault on businesses in 2011, fully exploiting the weaknesses of more traditional security countermeasures," Infosecurity reports.

Go to "Symantec reports polymorphic malware soaring to 72% during September" to read the details.

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