Beware - CCleaner contains malware - update it now !!

CCleaner popular software that optimizes the system by removing unnecessary files and registry. If you are one of the 130 million people you use worldwide, please check the version now.

CCleaner v 5.33.6162 (distributed from 15th August to 12th September)

CCleaner Cloud v1.07.3191 (distributed from August 24 to September 15)

If you use the above version, it may be infected with malware.

Version information is listed on the CCleaner main screen upper left. If it is not the latest version of v 5.35, you need to update from the link in the lower right of the main screen. If you are using a free version, please note that it will not update automatically.

British Piriform Software that sells CCleaner was just bought by Avast, a leading anti-virus software company in the Czech Republic in July 2017. It was a pattern that it was hacked in less than a month, and 2.27 million books were downloaded before the problem was discovered.

On September 13, 2017, The Security Division of the US Cisco Systems Talos where it was examined noticed abnormal, CCleaner v5.33 even though had the digital signature of the regular, suspicious payload packets (transmission It is said that the main body excluding the data header) was able to be confirmed.

When using CCleaner v5.33 infected with malware, it is said that the information of the computer is transmitted to the external server without knowing it. Although it seems that binary files can be downloaded via the backdoor and can also be executed, the damage has not actually been reported yet. Damage may expand from now on just by not noticing it.

Who did it? Both "External human theory" and "Person in Piriform" are emerging, but Talos speculates that the purpose was probably a cyber attack on a major high-tech company in any case.

Really, it is a nuisance. If you have knowledge and time to make malware, I would like you to become a white hat hacker!