Stealthy Excel malware putting organizations in crosshairs of ransomware gangs

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The HP Wolf Security threat research team identified a wave of attacks utilizing Excel add-in files to spread malware, helping attackers to gain access to targets, and exposing businesses and individuals to data theft and destructive ransomware attacks. There was a huge six-fold increase (+588%) in attackers using malicious Microsoft Excel add-in (.xll) files to infect systems compared to last quarter – a technique found to be particularly dangerous as it only requires one click … More

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Source: help net security.com