Samsung, Singtel, Sony, and other tech firms infected via CCleaner backdoor
In its key findings, Avast learned that 1,646,536 unique MAC addresses (unique PCs) communicated with the hacker’s servers via the infected CCleaner backdoor, but only 40 PCs received the second malware payload.
CCleaner for Windows hacked – backdoor infects 2.3 million devices
Uninstall CCleaner if you have automatically updated the app, or are running version 5.33 or CCleaner Cloud 1.07.