


The company said it has already forced updates of the affected version and in its own words was "able to disarm the threat before it was able to do any harm." The impact is damaging, but considering that the application has amassed over 2 billion downloads and adds around 5 million new users each month, it could have been significantly worse. Piriform's CCleaner, owned by antivirus provider Avast, was found to be hosting a "multi-stage malware payload" that could install ransomware or keyloggers and further infect target computers on command.Īccording to Avast, around 2.27 million people ran the affected software, which was delivered via a hacked server. A popular PC-cleaning software used by over 130 million people put users at risk after hackers were able to insert malware into legitimate downloads. The current non-compromised version at the time of this writing is. To determine the version of CCleaner you are currently running simply launch the application and check the version number on the app’s upper-left next to the logo. In other words, to the best of our knowledge, we were able to disarm the threat before it was able to do any harm.” Check Your Version of CCleaner Users of CCleaner Cloud version have received an automatic update. In a blog post this morning, Piriform exec Paul Yung writes, “we’re moving all existing CCleaner v users to the latest version. Luckily, the company is taking the necessary steps to correct the situation. According to Avast, about 2.27 million people ran the affected software. The malware affects CCleaner version and CCleaner Cloud version. “The compromise could cause the transmission of non-sensitive data (computer name, IP address, list of installed software, list of active software, list of network adapters) to a 3rd party computer server in the USA,” Piriform says in a statement issued on Monday. The malware allowed an infected system to be remotely controlled and collect data from your computer.
