![]() The hack is the latest in a series of ‘supply chain’ attacks and highlights the evolution of cybercrime. Latest in a series of supply chain attacks In addition, they have failed to credit the third parties who uncovered and alerted them to the compromised software. Piriform’s parent company Avast is facing criticism however, nothing appeared on its Twitter feed for twelve hours and there are no announcements on its website. The intentions of those who hacked CCleaner’s code are unclear and it seems the code was detected and deleted before it was used. However, users of the software may have been vulnerable for up to a month. Upon uncovering the malicious code on September 12th, Piriform released a clean version of CCleaner the same day, with CCleaner Cloud following on September 15th. ![]() Ccleaner malware build install#The software does not update automatically and Piriform recommends a clean install following a virus scan. The company indicated that 3% of its users downloaded the affected software, and suggest that all users of CCleaner visit this link and download the latest, clean version. Piriform have posted an in-depth description of the specifics of the malware on their website. The incident potentially enabled unauthorized access to some 2.27 million devices. These copies of the software included malicious code inserting a backdoor through which further code could be downloaded from a remote server and run on the infected computer, without user consent. The downloads affected were those released on August 15th and August 24th for Piriform’s CCleaner and CCleaner Cloud. ![]() ![]() A backdoor enabled hackers access to 2.27 million devices In addition, it includes tools to reconfigure startup procedures and, in the update in question, a remote access tool. The software cleans up computers by deleting temporary internet files, cookies and obsolete files from a device. CCleaner is a free multi-platform program (Windows, Android, Mac OS) used by up to 130 million people worldwide. ![]()
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