
We no longer recommend against using CCleaner-you should definitely use it if you want to, but we don’t think everyone has to use it as both Windows 10 and Windows 11 have some solid built-in tools, and there are also some other great apps for deleting temporary files and freeing up disk space. Here are our current thoughts on whether CCleaner is safe. The company swiftly dealt with the data collection concerns and has not had any security breaches since then. Our concerns focused on a hack in 2017 and data collection issues in 2018. Update, 4/19/23: We originally published this article in 2018. We don’t recommend you upgrade to CCleaner 5.45. The popular system-cleaning tool now always runs in the background, nagging you and reporting anonymous data back to the company’s servers. I spent seven years writing breaking news for CNET as one of the site’s East Coast reporters. I've also written two books for Wiley & Sons- Windows 8: Five Minutes at a Time and Teach Yourself Visually LinkedIn.CCleaner just became worse. Beyond PCMag, I've written news stories and tutorials for a variety of other websites and publications, including CNET, ZDNet, TechRepublic, Macworld, Popular Science, Time, Fortune, US News & World Report, and AARP Magazine. I've been working for PCMag since early 2016 writing tutorials, how-to pieces, and other articles on consumer technology. How to Set Up Two-Factor Authentication.

How to Record the Screen on Your Windows PC or Mac.How to Convert YouTube Videos to MP3 Files.How to Save Money on Your Cell Phone Bill.

How to Free Up Space on Your iPhone or iPad.

