The specific version that was compromised is 5.3 and the free version doesn’t support automatic upgrades. So if you’re using CCleaner on Mac or Android, you don’t need to take action. While the large-scale hack was certainly concerning, the good news is that only an old 32-bit version of the Windows program fell victim to the cybercrooks-and users had to run the program with admin rights for the payload to execute. Here’s what you need to do to safely remove the infected program from your Windows computer and truly keep your system clean. This code could leak details of your programs to a third-party server in the United States. Two spyware payloads were delivered to users after attackers hacked into the software developer’s network and put code in the program’s free version. If you’re one of the over 2 million users worldwide that has been infected by CCleaner, you need to remove it from your computer immediately.ĬCleaner is a legitimate system cleanup software that fell victim to a massive rogue code insertion.