If you installed the popular Windows registry scanner and cookie cleaner CCleaner after Aug. 15, you’re likely running a decapitated botnet. If you installed the free version of CCleaner after Aug. 15 ...

Hackers have compromised popular file cleanup tool CCleaner and may have been using it to inject malware into potentially millions of home personal computers over the last month. Piriform Ltd., the ...

As investigations continue about the backdoor that was planted in CCleaner, Avast said it has found that the actors behind the attack were planning to install a third round of malware on compromised ...

Version 5.33 of the CCleaner app offered for download between August 15 and September 12 was modified to include the Floxif malware, according reports published by MorphiSec and Cisco Talos. Floxif is ...

Facepalm: Many users of popular system cleaning app, CCleaner, have complained that installing the software also installs the Avast anti-virus program without their permission. We have confirmed those ...

SAN FRANCISCO (Reuters) - Hackers broke into British company Piriform Ltd's free software that optimises computer performance last month, potentially allowing them to control the devices of millions ...

Avast, today's largest vendor of security software, has acquired Piriform, a UK-based company that is behind many successful desktop and mobile apps, such as CCleaner, Recuva, Speccy, and Defraggler.

A two-stage backdoor in digitally signed binaries of 32-bit CCleaner 5.33.6162 and CCleaner Cloud 1.07.3191 caused the sending of "non-sensitive data" to a server in the US. The issue has been fixed.