Fortineta announced its July 2010 Threat Landscape report, which showed that eight Sasfis botnet variants have landed in the company’s top 10 malware listing this period. This is an increasingly common occurrence, as developers continue to roll out updated copies of their creations. Earlier this year, the Sasfis botnet was dedicated to downloading and executing software (primarily fake antivirus) on infected systems. This period, Sasfis was observed downloading updated spamming modules. Typical Sasfis spam examples include fake UPS invoices and Facebook photo links.

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