Author Archives: Dirk Harz

The Many Faces of Necurs: How the Botnet Spewed Millions of Spam Emails for Cyber Extortion

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IBM X-Force researchers observed the Necurs botnet spewing millions of spam emails from more than 30,000 malicious IPs to extort bitcoin from victims who may or may not have viewed adult content.

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Goal! Spam Campaigns Capitalize on the World Cup Craze

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IBM X-Force researchers observed several ongoing spam campaigns tied to the World Cup — many of which used the official branding of tournament sponsors to lure victims.

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