13, Cisco Talos found that the official download of the free versions of CCleaner 5.33 and CCleaner Cloud also contained “a malicious payload that featured a Domain Generation Algorithm as well as hardcoded Command and Control functionality.” What that means is that a hacker infiltrated Avast Piriform’s official build somewhere in the development process build to plant malware designed to steal users’ data.

21 with details about the malware targeting specific technology companies for industrial espionage. In an in-depth probe of the popular optimization and scrubbing software, Cisco Talos has discovered a malicious bit of code injected by hackers that could have affected more than 2 million users who downloaded the most recent update.Įditor’s note: This article was first published on September 18, 2017, but was updated on Sept. It seems that CCleaner, one of PCWorld’s recommendations for the best free software for new PCs, might not have been keeping your PC so clean after all.

Ccleaner piriform malware 01net