CCleaner (formerly Crap Cleaner), developed by Piriform, is a utility program used to clean potentially unwanted files (including temporary internet files, where malicious programs and code tend to reside) and invalid Windows Registry entries from a computer. CCleaner has been reviewed by Chip.de, TechRadar, PC Magazine and TechRepublic.
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Features
CCleaner can delete temporary or potentially unwanted files left by certain programs, including Microsoft Edge, Internet Explorer, Firefox, Google Chrome, Opera, Safari, Windows Media Player, eMule, Google Toolbar, Netscape, Microsoft Office, Nero, Adobe Acrobat, McAfee, Adobe Flash Player, Sun Java, WinRAR, WinAce, WinZip and GIMP along with browsing history, cookies, recycle bin, memory dumps, file fragments, log files, system caches, application data, autocomplete form history, and various other data. The program also includes a registry cleaner to locate and correct problems in the Windows registry, such as missing references to shared DLLs, unused registration entries for file extensions, and missing references to application paths. CCleaner v2.27 and later can wipe the MFT free space of a drive, or the entire drive.
CCleaner can uninstall programs or modify the list of programs that execute on startup. CCleaner 2.19.901 and later can delete System Restore points.
A public version 1.10 for Mac OS X has been released along with a commercial Network Edition. Piriform also released CCleaner for Android in 2014.
Licence
The licence for the free version has common terms against reverse engineering, copying and sub-licensing, and it disclaims warranties and liability. The Business and Professional licences have a 30-day warranty.
Critical reception
CNET editors gave the application a rating of 5/5 stars, calling it a 'must-have tool'. It was awarded Editor's Choice Award in April 2009 by CNET.
Security flaws
In September 2017, CCleaner v5.33 (32-bit Windows) was compromised with malicious code that could install a backdoor enabling remote access of 2.27 million infected machines. Of these 2.27 million PCs, 40 received a second-stage payload that appears to have targeted technology companies such as Samsung, Intel and VMWare. On 13 September Piriform released CCleaner 5.34 and CCleaner Cloud 1.07.3191 that do not contain the malicious code.
Source of the article : Wikipedia
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