by Martin Brinkmann on September 18, 2017 in Security - Last Update: September 18, 2017 - 98 comments
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Download CCleaner for Mac. CCleaner is the most famous tool to clean your Windows PC and protect your privacy. It has millions of satisfied users all over the world. Now CCleaner for Mac is available. As proven, it's the best cleaner for Mac to remove your web browser caches, log files, cookies, and speed up your Mac in minutes. Many Mac discussions touched this issue arguing the necessity and safety of CCleaner for Mac. Some good users of a huge Apple community say there’s no need to use any alternative maintenance scripts for Mac since OS X has its own. However, for an advanced tool like CCleaner for Mac, it's a major headache. So, following this Apple requirement that was introduced in July 2012, we will sadly, no longer be distributing via the App Store.
Piriform, makers of the popular file cleaner CCleaner, confirmed on Monday 18th, 2017 that hackers managed to attack the company's computer network successfully.
The hackers compromised two versions of the CCleaner in the attack which have been used by up to 3% of the company's user base.
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The affected versions are CCleaner 5.33.6162 and CCleaner Cloud 1.07.3191. According to Piriform, only the 32-bit versions of the applications were compromised and distributed using the company's own infrastructure.
The company asks users to update their version of the program to the latest available release if that has not been done already. The latest release version of CCleaner is version 5.34 at the time of writing.
- CCleaner 5.33.6162 was released on August 15th, 2017, and an updated non-compromised version was released on September 12, 2017.
- CCleaner Cloud 1.07.3191 was released on August 24th, 2017, and a non-compromised version of the program on September 15th, 2017.
Security researchers of Cisco's Talos Group revealed details about the successful supply chain attack. Talos Group informed Avast, the parent company of Piriform, about the situation.
Talos Group'identified a specific executable' during tests of the company's new exploit detection tool which came from the CCleaner 5.33 installer which in turn was delivered by legitimate CCleaner download servers.
The download executable was signed with a valid Piriform signature. The installer contained a 'malicious payload that featured a Domain Generation Algorithm' as well as 'hardcoded Command and Control' functionality.
The Talos researchers concluded that the malicious payload was distributed between the release of version 5.33 on August 15th, 2017 and the release of version 5.34 on September 12th, 2017.
The researchers think it is likely that 'an external attacker compromised a portion' of Piriform's development or build environment, and used the access to insert the malware into the CCleaner build. Another option that the researchers consider is that an insider included the malicious code.
CCleaner users who want to make sure that the compromised version is not still on their system may want to scan it on Virustotal, or scan it with ClamAV, as it the only antivirus software that detects the threat right now.
You can download the free ClamAV from this website.
The malicious payload creates the Registry key HKLMSOFTWAREPiriformAgomo: and used it to store various information.
Piriform issued a statement on September 18th, 2017. According to that statement, non-sensitive data may have been transmitted to a server in the United States of America.
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.
Paul Yung, the company's VP of products, published a technical assessment of the attack on the company blog as well.
The only suggestion that Piriform has is to update to the most recent version.
Closing Words
The compromised versions of CCleaner and CCleaner Cloud were distributed for nearly a month. With over 20 million downloads per month, and the updates, that is a high number of PCs that have been affected by this.
CCleaner compromised: better check your PC
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Piriform, makers of the popular file cleaner CCleaner, confirmed on Monday 18th, 2017 that hackers managed to attack the company's computer network successfully.
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AdvertisementDear Lifehacker,
I've heard you (and others) recommend CCleaner as a maintenance tool for Windows, but I'm not really sure what to do with it. Should I just clean everything? Will that really make my computer faster? I'm a little overwhelmed here, help!
I've heard you (and others) recommend CCleaner as a maintenance tool for Windows, but I'm not really sure what to do with it. Should I just clean everything? Will that really make my computer faster? I'm a little overwhelmed here, help!
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Sincerely,
Confused Cleaner
Confused Cleaner
Dear Confused,
CCleaner can seem a bit confusing to first-time users, so this is a great question. In fact, we don't necessarily recommend using every option in the program. Here's what's worth using.
CCleaner can seem a bit confusing to first-time users, so this is a great question. In fact, we don't necessarily recommend using every option in the program. Here's what's worth using.
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What CCleaner Does
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Most people think of CCleaner as a maintenance tool that will improve your computer's performance. This is only half true. CCleaner is, in simplest terms, a disk cleanup tool. Its cleaner will delete temporary files, and it also includes tools for uninstalling programs, finding out what files are taking up the most space on your machine, and finding duplicate files. All these serve the same purpose: freeing up hard drive space. (It's just better than Windows' built-in disk cleanup tool.)
If your disk is almost full, then freeing up space can help boost performance—but running CCleaner every day isn't going to give you massive performance gains. In fact, in some cases, it could even slow things down.
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Let's dig into what each tool does, and talk about how to use it for maximum benefit.
The Cleaner
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CCleaner's main feature is the 'Cleaner', which you'll find under the tab of the same name. This deletes temporary files from your browsers and other programs, including system programs like Windows Explorer.
As we mentioned before, clearing up these files—particularly if they take up a lot of space—can help your computer run a little better. But some of these files actually make your computer faster, and deleting them will slow things down. Your browser's cache, for example, saves images and other files so they load quicker the next time you open a given web site. Windows Explorer's thumbnail cache helps you load folders with a lot of pictures or videos without reloading the thumbnails every time. And your browser's cookies keep you logged into your favorite sites, so you don't have to log in again every day.
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So, before you run the cleaner, consider what you actually want to clean first. If you want to keep those caches and cookies so things run a little faster, then uncheck their options in CCleaner's sidebar. (You can also whitelist certain cookies—for instance, gmail.com—in CCleaner's Options.) If you want to keep your web browsing private, however, you may want to clean them more often. Cleaning the temporary files is also a good first step in troubleshooting a misbehaving program.
In short: There's nothing wrong with cleaning these files regularly, but your computer may feel faster if you leave certain things unchecked and clean them less often. You can also click the 'Analyze' button before running the cleaner to see which items are taking up the most space.
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Read more ReadThe Registry Cleaner
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Registry cleaners are a slightly different beast. Unlike the temporary files cleaner, we don't recommend running this on any sort of schedule. While registry cleaners can help if something has damaged your system, they likely won't improve performance under normal circumstances—and in some cases can even cause damage. So, unless you're having trouble with a program that won't launch (or won't even install), I'd leave it alone.
In short: if the registry ain't broke, don't fix it.
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Other Tools
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If you head to the 'Tools' tab, you'll see some of CCleaner's other useful tidbits. Generally, most of these processes are better served by other programs, but it is nice to have them all in one place.
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Uninstall: This is basically the same as Windows' built-in Uninstall menu, just placed here for your convenience. We generally recommend running a more thorough uninstaller like Revo instead, so I'd skip this tool
Ccleaner For Mac Download
Startup: Contrary to its name, this section contains a lot more than just startup items. Not only can you tweak which programs start when your computer launches, but you can also disable or delete scheduled tasks, browser extensions, and context menu items (if your right-click menu is a little cluttered). Again, you can already do most of this through Windows itself, but this puts it all in one convenient spot. Just use the tabs along the top of this section to navigate.
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Disk Analyzer: If you're running out of hard drive space and running the Cleaner didn't help enough, check out the Disk Analyzer. It'll scan your hard drive and tell you what types of files are taking up the most space (photos, music, video, and so on). I generally recommend using a more powerful tool like WinDirStat—since it can also sort this information by folder—but CCleaner's built-in tool is decent.
![For For](/uploads/1/2/4/8/124847503/344464596.png)
Ccleaner For Mac Bleeping Toolbar
Duplicate Finder: Ever feel like you accidentally copied the same set of files twice to your computer? Maybe you have the same movie stored in two folders, or you have multiples of the same photo strewn about your photo library. Whatever the case, CCleaner's duplicate finder can help you seek them out using the file names, sizes, dates modified, and more. There are more advanced tools out there, but this one is a good start to your search.
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System Restore: This section lets you delete restore points to free up disk space. You can do this through System Properties > System Protection in Windows, but CCleaner's interface is a bit simpler.
Drive Wiper: This will securely erase hard drives that you want to sell or throw away. It won't work on your boot drive—you'll need a live CD for that—but if you're just erasing an extra hard drive you have lying around, this will do the trick.
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That seems like a lot of stuff, but at the end of the day, CCleaner is quite simple to use, once you know what to look for. It's a great utility for cleaning up disk space, and has a few troubleshooting tools baked in, making it an essential tool for any Windows PC—just don't think of it as a magic bullet for boosting performance.
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Sincerely,
Lifehacker
Lifehacker
Title image remixed from Sakhal (Shutterstock) and S_Photo (Shutterstock).
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