Change Parameter Mac

Change Parameter

Change Parameter is a PUA (potentially unwanted application) that redirects the user’s browser, causing it to open various promoted sites. Change Parameter is intended to operate as a site-promoting tool that modifies the user’s browser, replacing the search engine and the homepage without permission.

Change Parameter Mac

The Change Parameter App on Mac

If you have encountered such a software component in your Chrome, Firefox or other popular browser, then you are most likely willing to find a way to remove it to stop it from further tampering with the settings of your browser and putting ads and page redirects on your screen. We can help you with that but we must first tell you a bit more about the characteristics of this unwanted app so that you know what you have on your hands.

Change Parameter for Mac

Change Parameter for Mac is a browser-hijacking app that adds a new search engine to the main browser of Mac computers. The goal of Change Parameter for Mac is to redirect the user’s searches to certain sites that need promotion and thus earn Pay-Per-View revenue.

In other words, this is an advertising app and not an actual malware virus like a file-encrypting ransomware virus or a Trojan horse. In most cases, the worst thing a browser hijacker is going to do is to obstruct your browsing process and make you feel very irritated and frustrated because you wouldn’t be able to easily use your browser without clicking on some popup or banner.

However, experts agree that it could, in some cases, be potentially unsafe to the system to keep a browser hijacker attached to the browser. The problem is that most such apps do not filter the ads and redirects they display which could, in turn, potentially lead to exposure to unsafe and possibly even harmful content.

What is Change Parameter?

Change Parameter is a software component similar to a browser extension that gets integrated with the browser and starts to display ads. Change Parameter is also known for rerouting the user’s searches to unknown pages, some of which may contain potentially unsafe elements.

The best response if you notice a browser hijacker in your browser is to remain calm and to look for a way to uninstall the page-redirecting software. Usually, removing a hijacker is not as simple as uninstalling a regular app because most hijackers are intentionally created to have a difficult removal process. After all, the longer the unwanted app stays attached to your browser, the higher the potential end-profit that could be earned from it becomes. This is why the creators of such software are interested in discouraging users from trying to remove the hijacker by making the removal process as difficult as possible.

The ChangeParameter app

The ChangeParameter app is an example of a browser-hijacking software component that can secretly take over important functions of your browser without your agreement. Most users notice the ChangeParameter app after it replaces the browser’s search engine and begins filling the search results with ads.

If you don’t know how you can remove this app from your Mac but are concerned that its presence there may eventually lead to attacks from more serious forms of viruses (such as ransomware, Trojans, and the like), we encourage you to try the removal instructions available below and/or the recommended professional anti-malware tool that has been tested against unwanted apps like this one.



Name Change Parameter
Type Browser Hijacker
Danger Level Medium (nowhere near threats like Ransomware, but still a security risk)
Symptoms The main issue with hijackers is that they constantly redirect the user to the sites that sponsor their creators, thus causing browsing disruptions.
Distribution Method A common method for spreading hijackers is the use of file bundling and clickbait ads.
Detection Tool

Remove Change Parameter App from Mac

For a quick way to remove Change Parameter 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 Change Parameter.
  5. Remove Change Parameter 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 Change Parameter!

Change Parameter 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.

Change Parameter Mac


Start Activity Monitor by opening up Finder, then proceed to Change Parameter 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:

Change Parameter Mac

Now click on Sample at the bottom:

Change Parameter 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:

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Change Parameter Mac
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    Change Parameter 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.

    Change Parameter 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,

    Change Parameter Mac

    and then again on the Extensions tab,

    Change Parameter 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.
    Change Parameter 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,
    Change Parameter 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

    Change Parameter Mac

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

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

    Change Parameter Mac How to Remove Change Parameter From Firefox in OSX:

    Open Firefoxclick on Change Parameter Mac (top right) ——-> Add-onsHit Extensions next.

    Change Parameter Mac

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

    Change Parameter MacHow to Remove Change Parameter From Chrome in OSX:

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

    Change Parameter Mac

     Click Change Parameter 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


    Brandon Skies

    Brandon is a researcher and content creator in the fields of cyber-security and virtual privacy. Years of experience enable him to provide readers with important information and adequate solutions for the latest software and malware problems.

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