If an attacker can successfully compromise the supply chain of a vendor, this has far-reaching consequences – this is also something that has happened already in the past. The supply chain is a very valuable target for this. After being the go-to Windows system cleaner for many years, CCleaner hit a very rocky patch that started with the discovery of a. Following the software getting hacked in 2017, Avast made the changes needed to help ensure the same doesn't happen again. In January 2017, CNET gave the program a 'Very Good' rating. CCleaner is a safe option for cleaning unwanted files from your Windows PC. During the cleanup, malicious files buried in the system are also deleted. ![]() The software gets rid of temporary files that eat up disk space and invalid Windows registry keys. Malware authors appear to go to ever greater lengths in order to infect as many machines in the shortest possible amount of time. CCleaner is a utility program designed to delete unwanted files from a computer. The „ Petna“ malware used the update infrastructure of an accounting software. In the past, similar things happened to a Torrent-Client for Mac as well as a Linux-Distribution. ![]() Affected users are strongly recommended to update their CCleaner software to version 5.34 or higher, in order to protect their computers from being compromised. However, spreading malware that was signed with a valid certificate or malware-laden versions of legitimate programs via official channels is by no means a new phenomenon. However, Piriform estimated that up to 3 percent of its users (up to 2.27 million people) were affected by the malicious installation. The fact that the infected version 5.33 had been signed with a valid certificate points to several potential security issues, ranging from a compromised certification process to a compromised certification authority. Compromised downloads – not a new phenomenon
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