Common Optimization Mac

Common Optimization

Common Optimization is a Mac program that acts as an add-on to the main web browser. Security experts classify Common Optimization as a browser hijacker since it can replace the main search engine and the address of the homepage with new ones that redirect users to sponsored sites.

Common Optimization Mac

The Common Optimization app is on Mac.

Apps like this typically do not have restrictions on usability and can be enabled on all common browsers, including Firefox, Safari, Chrome, Opera and others. Users often don’t even know how the undesirable application has been added to their browser because software such as Common Optimization, Search Baron and Search Marquis often uses stealth tactics for distribution. If the unwanted application is part of a software package and is hidden within the Advanced setup settings, many users would not notice it until they complete the installation of the whole software bundle. After that, however, they will surely detect changes in their browser and a stream of aggressive pop-up ads, banners and redirect prompts on their screen.

Common Optimization for Mac

Common Optimization for Mac is a Mac computer-based browser hijacker designed to inject ads into user search results. Common Optimization for Mac is also reported to cause auto redirects to sponsored websites that pay for traffic and exposure.

The app itself does not directly harm your computer and its objective is not malicious. However, if you allow such software to operate freely within your browser, you may definitely experience some significant browsing disturbance. Most of the users of Common Optimization quickly find out that the app has some rather aggressive ad generation patterns and browser redirection features that interfere with the regular web surfing in rather unpleasant way. That’s why they prefer to uninstall the hijacker and remove the browser modifications related to it in order to restore their previous web browsing settings.

What is Common Optimization?

Common Optimization is a free application that can trigger Mac browsers to redirect users into sponsored pages full of commercial content. The ultimate goal of Common Optimization is to make money from pay-per-click revenue, but not all of its promotional links and ads can be proven as reliable.

Most creators of browser hijackers don’t really care what ads and sites their software promotes and how safe and reliable these ads can be. This means that a random click from your side may potentially lead you to unsafe web locations or expose you to more serious threats, including various types of viruses or malware (Trojans, ransomware, rootkits, phishing malware, and more. This being said, it is important to uninstall the browser hijacker as soon as you notice it has been added to your browser in order to avoid a potential encounter with hazardous web content.

The CommonOptimization app

The CommonOptimization app is a rogue Mac appliaction that displays various advertisements into the main browser’s window and automatically redirects user searches to pre-defined web pages. The presence of the CommonOptimization app on your browser may compromise your Mac and expose it to threats. 

Therefore, we suggest that you remove the browser hijacker as soon as possible. If you don’t ‘know how to do that, we have provided you with a guide that contains detailed instructions on how to uninstall the hijacker. There is also an automatic removal tool that can scan your entire system for similar programs, as well as Trojans, ransomware and other viruses and delete them with a few clicks.  


Name Common Optimization
Type Browser Hijacker
Danger Level Medium (nowhere near threats like Ransomware, but still a security risk)
Symptoms A Browser Hijacker may redirect your web searches to pre-defined websites and may prompt you to click on various pop-up ads and banners during your web surfing sessions.
Distribution Method The software bundling method is a common method for distribution of Browser Hijackers and other potentially unwanted programs.
Detection Tool

Common Optimization Removal from Mac

For a quick way to remove Common Optimization try to do this inside your Mac browser:

  1. Open your Mac browser.
  2. Go to Preferences.
  3. Now navigate to the extensions sub-menu.
  4. Look for any unfamiliar entries, including Common Optimization.
  5. Remove Common Optimization from your Mac as well as any other suspicious-looking items by clicking on the trash bin icon.

If this does not help then continue reading this article for more detailed instructions on how to get rid of Common Optimization!

Common Optimization Mac

The first thing you need to do is to Quit Safari (if it is opened). If you have trouble closing it normally, you may need to Force Quit Safari:

You can choose the Apple menu and click on Force Quit.

Alternatively, you can simultaneously press (the Command key situated next to the space bar), Option (the key right next to it) and Escape (the key located at the upper left corner of your keyboard).

If you have done it right a dialog box titled Force Quit Applications will open up.

In this new dialog window select Safari, then press the Force Quit button, then confirm with Force Quit again.

Close the dialog box/window.

Common Optimization Mac


Start Activity Monitor by opening up Finder, then proceed to Common Optimization Mac

Once there, look at all the processes: if you believe any of them are hijacking your results, or are part of the problem, highlight the process with your mouse, then click the “i” button at the top. This will open up the following box:

Common Optimization Mac

Now click on Sample at the bottom:

Common Optimization Mac

Do this for all processes you believe are part of the threat, and run any suspicious files in our online virus scanner, then delete the malicious files:

Each file will be scanned with up to 64 antivirus programs to ensure maximum accuracy
This scanner is free and will always remain free for our website's users.
This file is not matched with any known malware in the database. You can either do a full real-time scan of the file or skip it to upload a new file. Doing a full scan with 64 antivirus programs can take up to 3-4 minutes per file.
Common Optimization Mac
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Common Optimization Mac
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    Common Optimization Mac

    The next step is to safely launch Safari again. Press and hold the Shift key while relaunching Safari. This will prevent Safari’s previously opened pages from loading again. Once Safari is opened up, you can release the Shift key.

    On the off chance that you are still having trouble with scripts interrupting the closing of unwanted pages in Safari, you may need to take some additional measures.

    First, Force Quit Safari again.

    Now if you are using a Wi-Fi connection turn it off by selecting Wi-Fi off in you Mac’s Menu. If you are using a cable internet (Ethernet connection), disconnect the Ethernet cable.

    Common Optimization Mac

    Re-Launch Safari but don’t forget to press and hold the Shift button while doing it, so no previous pages can be opened up. Now, Click on Preferences in the Safari menu,

    Common Optimization Mac

    and then again on the Extensions tab,

    Common Optimization Mac

    Select and Uninstall any extensions that you don’t recognize by clicking on the Uninstall button. If you are not sure and don’t want to take any risks you can safely uninstall all extensions, none are required for normal system operation.
    Common Optimization Mac

    The threat has likely infected all of your browsers. The instructions below need to be applied for all browsers you are using.

    Again select Preferences in the Safari Menu, but this time click on the Privacy tab,
    Common Optimization Mac

    Now click on Remove All Website Data, confirm with Remove Now. Keep in mind that after you do this all stored website data will be deleted. You will need to sign-in again for all websites that require any form of authentication.

    Still in the Preferences menu, hit the General tab

    Common Optimization Mac

    Check if your Homepage is the one you have selected, if not change it to whatever you prefer.
    Common Optimization Mac

    Select the History menu this time, and click on Clear History. This way you will prevent accidentally opening a problematic web page again.

    Common Optimization Mac How to Remove Common Optimization From Firefox in OSX:

    Open Firefox, click on Common Optimization Mac (top right) ——-> Add-ons. Hit Extensions next.

    Common Optimization Mac

    The problem should be lurking somewhere around here – Remove it. Then Refresh Your Firefox Settings.

    Common Optimization MacHow to Remove Common Optimization From Chrome in OSX:

    Start Chrome, click Common Optimization Mac —–>More Tools —–> Extensions. There, find the malware and select Common Optimization Mac.

    Common Optimization Mac

    Click Common Optimization Mac again, and proceed to Settings —> Search, the fourth tab, select Manage Search Engines. Delete everything but the search engines you normally use. After that Reset Your Chrome Settings.

    If the guide doesn’t help, download the anti-virus program we recommended or try our free online virus scanner. Also, you can always ask us in the comments for help!


    About the author


    Lidia Howler

    Lidia is a web content creator with years of experience in the cyber-security sector. She helps readers with articles on malware removal and online security. Her strive for simplicity and well-researched information provides users with easy-to-follow It-related tips and step-by-step tutorials.

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