



We have no indications that any other data has been sent to the server. The compromise could cause the transmission of non-sensitive data (computer name, IP address, list of installed software, list of active software, list of network adapters) to a 3rd party computer server in the USA. CCleaner Cloud v was released on the 24th of August, and updated with a version without compromised code on September 15.
CCLEANER 5.34 UPDATE
Piriform CCleaner v was released on the 15th of August, and a regularly scheduled update to CCleaner, without compromised code, was released on the 12th of September. Issue Summary: Our new parent company, the security company Avast, determined on the 12th of September that the 32-bit version of our CCleaner v and CCleaner Cloud v products, which may have been used by up to 3% of our users, had been compromised in a sophisticated manner. We apologize and are taking extra measures to ensure this does not happen again. No other Piriform or CCleaner products were affected. We encourage all users of the 32-bit version of CCleaner v to download v5.34 here: download. This compromise only affected customers with the 32-bit version of the v of CCleaner and the v of CCleaner Cloud. We resolved this quickly and believe no harm was done to any of our users. We recently determined that older versions of our Piriform CCleaner v and CCleaner Cloud v had been compromised.
