The Qbot trojan first appeared in 2008 as banking and credential theft malware, evolving over the years to deliver ransomware attacks, making it something of a Swiss Army knife of the malware world. Researchers at Check Point have now uncovered a further evolution that allows Qbot to hijack legitimate email conversations from an infected user’s Outlook email client, and then spam itself out using those hijacked emails to increase its chances of tricking other users into getting infected.

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