Hackers Hid Backdoor In CCleaner Security App With 2 Billion Downloads -- 2.3 Million Infected
"Users of Avast-owned security application CCleaner for Windows have been advised to update their software immediately, after researchers discovered criminal hackers had installed a backdoor in the tool. The tainted application allows for download of further malware, be it ransomware or keyloggers, with fears millions are affected. According to Avast’s own figures, 2.27 million ran the affected software, though the company said users should not panic."