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CCleaner News

Security Notification for CCleaner v5.33.6162 and CCleaner Cloud v1.07.3191 for 32-bit Windows users

We recently determined that older versions of our Piriform CCleaner v5.33.6162 and CCleaner Cloud v1.07.3191 had been compromised. We estimate that 2.27 million people used the affected software. We resolved this quickly and believe no harm was done to any of our users. This compromise only affected customers with the 32-bit version of the v5.33.6162 of CCleaner and the v1.07.3191 of CCleaner Cloud. No other Piriform or CCleaner products were affected. We encourage all users of the 32-bit version of CCleaner v5.33.6162 to download v5.34 here: download. We apologize and are taking extra measures to ensure this does not happen again.

Issue Summary: Our new parent company, the security company Avast, determined on the 12th of September that the 32-bit version of our CCleaner v5.33.6162 and CCleaner Cloud v1.07.3191 products, which may have been used by up to 3% of our users, had been compromised in a sophisticated manner. Piriform CCleaner v5.33.6162 was released on the 15th of August, and a regularly scheduled update to CCleaner, without compromised code, was released on the 12th of September. CCleaner Cloud v1.07.3191 was released on the 24th of August, and updated with a version without compromised code on September 15. 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. We have no indications that any other data has been sent to the server. Working with US law enforcement, we caused this server to be shut down on the 15th of September before any known harm was done. It would have been an impediment to the law enforcement agency’s investigation to have gone public with this before the server was disabled and we completed our initial assessment. Between the 12th and the 15th, we took immediate action to make sure that our Piriform CCleaner v5.33.6162 and CCleaner Cloud v1.07.3191 users were safe - we worked with download sites to remove CCleaner v5.33.6162, we pushed out a notification to update CCleaner users from v5.33.6162 to v5.34, we automatically updated those where it was possible to do so, and we automatically updated CCleaner Cloud users from v1.07.3191 to 1.07.3214.

We are continuing to investigate how this compromise happened, who did it, and why. We are working with US law enforcement in their investigation. A more technical description of the issue is on our Piriform blog at: Again, we sincerely apologize for this and are committed to making sure nothing similar happens again. We encourage any user of the 32-bit version of CCleaner v5.33.6162 to download the latest version of Piriform CCleaner found here:

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CCleaner Cloud has Launched!

Say hello to CCleaner Cloud

It's celebration time!

After months of hard work we're pleased to announce Project Agomo has come out of Beta and has now become CCleaner Cloud!

Developed to bring freedom and peace-of-mind to millions, CCleaner Cloud - the ultimate cloud-based PC management application - gives you the power to clean and manage your computers easily, from anywhere.

CCleaner Cloud harnesses the power of our award-winning desktop products so you can:

  • Clean temporary files and clutter from all of the machines you manage, right from your browser
  • Defragment hard drives to improve performance and lifespan
  • Fix Registry issues remotely
  • Install or remove software from all of your home or work computers
  • And view hardware specs and performance stats for your entire network

No matter where you are.

Plus, it even runs a series of in-depth reports to warn you before problems occur!

And CCleaner Cloud is getting even better!

In the coming weeks we're rolling out some new features to make using CCleaner Cloud a truly exceptional experience – watch this space for more details!

Sign-up to start your journey to peace of mind everywhere.

If you’re an Agomo user, your account has been automatically updated to CCleaner Cloud.

Hear from us by email:
If you haven’t done so already, you can sign up to receive selected email communications, including news, product updates, case studies and special announcements, here.

Connect with us:
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Piriform on Google+

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CCleaner for Android has Launched!

CCleaner for Android

We're excited to announce that CCleaner for Android is now out of Beta and is available to download FREE from the Google Play Store!

In the months since its Beta release we've had tens of thousands of dedicated users sign up to test the app and the amount of positive responses has been overwhelming! We've been working hard behind the scenes to fix bugs, improve performance and add more features.

Keeping your Android device Clean, Safe and Fast is now easier than ever with the new CCleaner for Android. It's available now for you to download, totally free!

Remove junk, reclaim space, monitor your system and browse safely with the ultimate FREE cleaning app for Android!

More About CCleaner for Android

  • Optimize and Clean - browser history, application cache, download folders, clipboard, call logs and SMS messages
  • Reclaim storage space - uninstall unwanted applications, streamline your device, free up memory
  • System Monitor - keep track of your CPU, RAM, storage space and battery levels

Download now from the Google Play Store.

Connect with us:
Piriform on Facebook
Piriform on Twitter
Piriform on Google+

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CCleaner for Android

We are extremely excited to announce the Beta Release of CCleaner for Android! This release comes after months of research and development - along with a huge amount of user input, testing and feedback!

The CCleaner App is available for FREE from the Google App store, simply join our Beta Community and Download!

The feature set is already extensive and full of essential tools to keep your devices running like new:

  • Optimize - Browser History, Application Cache, Clipboard and more
  • Clean - Call Logs and SMS messages individually, in bulk, by age or by contact
  • Reclaim storage space by quickly removing unwanted applications
  • Monitor your CPU, RAM, storage space and battery levels

And that's just the beginning, we're also working on:

  • Process management and RAM cleaning
  • Custom folder cleaning
  • Features for rooted devices
  • And much, much more!

These additional features will be released in the next few weeks!

Join our beta community now and Download for FREE!

Download Now

Connect with us:
Piriform on Facebook
Piriform on Twitter
Piriform on Google+

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Introducing Agomo

After more than a year in development, we're really excited to unveil our brand new product: Agomo!

Agomo brings the power of our award-winning software to the cloud – letting you clean, defrag and monitor your computers from anywhere, using your browser.

So whether you're in a coffee shop, at a hotel, or getting some quality sofa time, you can keep up with your PC maintenance.

Agomo's in beta right now and we're giving out a limited number of invitations over the next few weeks. Want to try it out?

Sign up for Agomo

Agomo More about Agomo

Simply install the compact and highly secure Agomo client onto all your computers, then you can:

  • Speed up and secure your computer with the power of CCleaner!
  • Defrag your hard disk with Defraggler technology.
  • Add and remove programs.
  • Maintain and optimize your PCs from a single point!
  • Monitor system stats, components, memory, disk space, and much more!

When Piriform started, we set out to create the fastest and most efficient desktop products to make computers cleaner, safer and faster. We're now looking to do the same from the web, but we need your help and suggestions to improve. Sign up today for access to the beta version of Agomo and help shape the future of computer optimization!

Sign up for Agomo

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