WARNING - CCleaner Infected by Malware
September 19, 2017 6:56am CST
CCleaner is an application distributed by Avast to optimize the performance of the computer. The Security researchers from Cisco Talos have discovered the application has been hacked. A backdoor has been installed by hackers, to connect your computer to dubious site in order to download harmful applications. If you downloaded CCleaner from the 15th of August up to the 11th of September, stop immediately using it and download the most updated version. Also the Cloud version is affected. Do you installed or used CCleaner? For your security, be sure to check the site for the updated version.
95 people like this
Nothing better than an anti/virus/malware or a firewall to install discretly some malware. The person who installed this backdoor could not do it without an access to the source code, and it seems incredible that nobody noticed 1/the intrusion 2/the changes in the source code. If I was Avast I would be worried. My Linux box uses quite only open source software.
I fully agree, I cannot believe that since the 15th of August nobody noticed that their software was accessing dubious sites. Avast was good until a few months ago, now I have doubts using it when I switch to my Windows partition. I also use open source software with Linux.
I also used Kaspersky when I wanted to check my computer for viruses. I have read yesterday that the U.S. Senate has banned Kaspersky from government networks, they fear that they are a pawn of Kremlin and a possible security risk. I am seriously concerned.
• French Polynesia
Years ago Avast was so popular here in Tahiti because they offered a free antivirus. I had nothing but problems with this program and many viruses on client's computers. The antivirus also slowed down the operating speed of the computer and was just down right horrible. I have always removed this program off my client's computers. I always knew a long time ago this antivirus or one of the other programs created by this company would be hacked. Well, it has finally happened and I am glad I talked so many people out of using these programs and deleting them off of thier computers.
• Cambridge, England
Thank you for the warning. I immediately checked the statement from Piriform and have downloaded and installed the latest version (5.4) which has been certified free of malware. As far as I recall, I hadn't updated it since the middle of August so, hopefully, I shall not have allowed it to send any data. The domain it purported to have been sending the data to has now been closed down, in any case, so hopefully, little damage has been done. CCleaner has been my cleanup tool of choice for years and I have always thought Piriform a very trustworthy company. They say that they do not yet know how the malware was introduced into their software.
I have also used CCleaner from many years and I am glad that I downloaded nothing during the month of August and September. I am surprised that this happened, because they are a serious company, but in our days people do everything for money, surely someone working in the company.
• Genova, Italy
Good advice. Once a time, I used CCleaner. But only at the "surface level". A computer lab store near my house told me that if we do not know how to use CCleaner properly, it could sometimes delete "vital" files and therefore compromise the correct functioning of the system
@LadyDuck Nope don't have a firewall at all. In the 5 years that I've used my old MacBook pro I've never had a firewall or any sort of anti-virus. The same thing with my new MacBook Pro now. My son is still using my old MacBook Pro without any issue.