Even with all the "privacy" settings enabled to supposedly prevent sending of personal information, and using version 5.44, the CCleaner software is a "busy little bee" attempting to send and make contact with several different destinations.
I decided to run just a simple cleanup of temporary files using 5.44 with my firewall (previously set) set to block all connections from CCleaner.exe. I had (152) attempts by CCleaner across a variety of differing outgoing connections that were blocked by the firewall. Every one of the connections blocked in the image below was originated from the CCleaner.exe application and intercepted by my Firewall rule to block them.
For anyone thinking they can disable the settings in the software to control privacy, you need to (as many here have suggested) setup a firewall block of the software. It is pervasive and repeatedly attempting to send data from your PC to various internet locations.
I'd like to add that CCleaner has been phoning home for a few years now (search for past posts to confirm this), I don't think it is any different than now, just with the latest security incidents people are more 'twitchy'
Changes in v5.45 and your feedback
in CCleaner
Posted
I'd like to add that CCleaner has been phoning home for a few years now (search for past posts to confirm this), I don't think it is any different than now, just with the latest security incidents people are more 'twitchy'