Piriform recommends deleting your current version and downloading a clean version from its website.Īfter you have your new software downloaded, run a check on your system using malware protection software to be sure that CCleaner didn't leave any nasty invaders behind.Įditors' note: This article was originally published Sept. What should I do?ĬCleaner v does not update on its own, so if you use the non-cloud version you may have the corrupted software. Also, if you have the Cloud version, it should have automatically updated itself by now to the clean version. This is when the new, uncorrupted version was released. If you've updated your software since Sept. 19, Avast says that 730,000 users are still using the affected version. The Android version for phones doesn't seem to be affected. The versions that were affected are CCleaner v or CCleaner Cloud v for 32-bit Windows PCs. How do I know if I have the corrupted version? The company believes that they were able to disarm the malware before any harm was done. Specifically, computers running 32-bit Windows 10 ( $149 at Amazon). 15.Īround 3 percent - roughly 2.27 million computers - used the infected software. The compromised version of CCleaner software was then released to customers on Aug. Who was infected?Īccording to information provided by Avast CEO Vince Steckler and Consumer Business CTO and EVP Ondrej Vlcek, the compromise to the system may have started as early as July 3, prior to Avast buying the company. 'Working with US law enforcement, we caused this server to be shut down on the 15th of September before any known harm was done,' said the company in the announcement. Your credit card numbers, social security number and the like seem to be safe. It gathers information like your IP address, computer name, a list of installed software on your computer, a list of active software and a list of network adapters and sends it to a third-party computer server.

If you use CCleaner, here's what you need to know. Monday, the company that makes CCleaner, Avast's Piriform, announced that its free software was infected with malware. Computer-optimization software is supposed to keep your computer running smoothly.

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