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Avast safezone update checker disabled upgrade#
Avast safezone update checker disabled software#

With these two actions, “ the server was taken down and the threat was effectively eliminated”

During that time, the Cisco Talos team was also working on the issue and registered the secondary DGA domains.

Avast worked with law enforcement in the US and the offending Control and Command server was taken down on September 15.

Avast first learned about the compromise on September 12, and, by the time the Cisco message was received (September 14), they already analyzed the threat, assessed its risk level and started investigating the root cause of the issue.

Separately, Cisco also reported this problem to Avast on September 13.

The following day, on September 12, Morphisec started the investigation and notified Avast about its findings to identify the issue.

Morphisec researchers identified and prevented CCleaner.exe installations on August 20 and 21, at customers logs, and some of them shared their logs on September 11.

A compromised version of CCleaner was released on August 15 and “ went undetected by any security company for four weeks” said Avast on an updated article on their blog.

Avast safezone update checker disabled upgrade#

If you are using the older version of CCleaner app, 5.33 and above, you should upgrade to the 5.34 version immediately. Attackers managed to infiltrate two versions of CCleaner and slip backdoors into them, potentially impacting millions of devices and their users. The attack against CCleaner has been labeled as a “supply-chain attack” which involves exploiting vulnerabilities in the supply network used by a specific organization.ĬCleaner, one of the most widely used PC cleaner and optimization applications created by Piriform and acquired in July 2017 by the antivirus company Avast, has been compromised by cyber criminals.

Avast safezone update checker disabled software#

Like this recent one with CCleaner, a popular PC cleaning software app. But unfortunate incidents happen, critical pieces of infrastructure are affected and produce business disruptions.

And every part of the system should provide maximum security and safeguard sensitive data. IT infrastructure is important for any company to better perform on the market.