Alternatively, you might also reinstall the whole Windows operating system. Should I Switch to Another Cleaning Program?Ĭisco Talos recommends affected users to restore Windows to a state before Aug 15. Under the program name, you’ll see the version number. To check what version you have, simply open CCleaner on your computer. CCleaner by Piriform September 18, 2017

Only the 32-bit version of CCleaner v was affected and the issue is no longer a threat. More specifically, you might have the malware that affected version released on August 15th, 2017. If you’re using CCleaner on a Windows PC, then you may have been affected. CCleaner by Piriform September 22, 2017 If you are using CCleaner for Mac, the answer is NO, you are NOT affected! Piriform also confirmed on this. The second payload Cisco Talos researchers discovered was a malware attack targeted against big technology organizations like Cisco, VMware, Samsung, and others. However, it did collect and encrypt info that might be used to do harm to your system in the future. It did not actively harm your computer system. The malware was built to steal users’ data. Simply put, the news is this: A hacker “breached CCleaner’s security to inject malware into the app and distribute it to millions of users”, as reported by The Verge. The technical description was too complicated to understand. a second payload was found that affected 64-bit Windows users). Two days later, those researchers posted another article with their continued research on C2 and payloads (i.e. “For a period of time, the legitimate signed version of CCleaner 5.33 being distributed by Avast also contained a multi-stage malware payload that rode on top of the installation of CCleaner.” In September 2017, researchers at Cisco Talos published a post stating that Please note that you don’t have to switch because you may not be affected - but it’s always good to do the research just in case. I’ll point out what each one has to offer and let you decide which is best. Some of the alternatives are free, while others are paid. In this post, I’ll quickly run through the issue and list a few similar cleaning tools for you to consider. When I heard the news that the program had been hacked and more than 2 million users were at risk, I was absolutely shocked, just like you.Īm I affected? Should I continue using CCleaner? What’s the best alternative to consider? Questions like these all went through my mind. Above is the main screen of CCleaner on my Mac. I’ve been using CCleaner for years on both my PC (HP laptop with Windows 10) and Mac (MacBook Pro with macOS 10.13 High Sierra).

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