[RD (OP)]

"Copies of the malicious software installer were distributed to CCleaner users between August 15 and September 12, 2017, using a valid certificate issued to Piriform Ltd by Symantec."

https://arstechnica.com/information-technology/2017/09/backdoor-malware-planted-in-legitimate-software-updates-to-ccleaner/

Good job I'm late at installing updates: my version of CCleaner is from May 2017.

[chris]

Wow - the world gets scarier every day. Luckily I've not downloaded Ccleaner lately.