I believe that it was just the 64-bit version. See their twitter reply: https://twitter.com/piriform/status/910098222051446784 https://twitter.com/piriform/sta

I believe that it was just the 64-bit version. See their twitter reply: https://twitter.com/piriform/status/910098222051446784 https://twitter.com/piriform/status/910098222051446784 'The 64-bit version of CCleaner v5.33.6162 was not affected but we encourage all users to update to the latest version, 5.24.'