How to remove Dem.app (Mac)

What is Dem.app

Dem.app is a type of adware that primarily targets macOS systems, belonging to the notorious Pirrit malware family. This advertising-supported software is designed to generate intrusive advertisements on various platforms, often leading users to dubious websites and promoting unreliable products or services. Users may experience a significant decline in system performance as Dem.app runs in the background, tracking browsing habits and collecting sensitive information. The adware typically infiltrates systems through deceptive pop-up ads, bundled software installations, and torrent downloads. Once installed, it can display unwanted pop-up ads, redirect users to suspicious sites, and compromise their privacy. Removal of Dem.app is crucial to safeguard against potential identity theft and financial loss, as well as to restore normal browsing experiences. Using reputable antivirus software, such as Combo Cleaner, is recommended for effective detection and removal of this adware.

How Dem.app infects Mac computers

Dem.app typically infects Mac systems through deceptive methods often associated with adware distribution. One common technique is bundling, where the adware is packaged alongside legitimate software during installation. Users may unknowingly install Dem.app by selecting “Easy” or “Quick” installation options, thereby bypassing the chance to opt-out of unwanted applications. Additionally, it can be propagated through intrusive pop-up ads and misleading websites, which may lead users to click on malicious links or download compromised files. Once installed, Dem.app can display intrusive advertisements and potentially track user data, posing significant privacy risks. To mitigate the threat, users are advised to exercise caution when downloading software and to always opt for custom installation settings.

1. Download Dem.app Removal Tool
2. Remove Dem.app from Login Items
3. Remove/Uninstall Dem.app from Applications
4. Remove Dem.app from browsers
5. Reset browser settings
6. Remove Dem.app files and folders
7. Block Dem.app ads and pop-ups
8. How to protect from threats, like Dem.app

Remove Dem.app manually for free

Note: Dem.app sets up to start on macOS startup. Therefore, before starting the removal, perform these steps:

1. Open System Preferences, choose Users & Groups.
2. Choose your account (set up as Current User).
3. Click Login Items tab.
4. Find “Dem.app” entry. Select it, and click the “-“ (minus) button to remove it.

Note 2: Dem.app won’t quit just by closing it, therefor use Force Quit to end the process.

1. Press 3 buttons at the same time: Option, Command, and Esc (Escape). This is similar to Control-Alt-Delete on a Windows PC.
2. Choose Dem.app in the list.
3. Click Force Quit button.

Here is a manual step-by-step tutorial for full Dem.app removal from your computer. This works 99% and was checked with the latest versions of Dem.app installer on operating systems with the latest updates and browser versions.

Remove Dem.app from Applications

Remove Dem.app from Mac:

1. In the Finder sidebar, click Applications.
2. Dem.app might have an Uninstaller. If you see Uninstall Dem.app or Dem.app Uninstaller, double-click it and follow the onscreen instructions.
3. Otherwise, drag Dem.app from the Applications folder to the Trash (located at the end of the Dock).
4. Then choose Finder > Empty Trash.

Cannot uninstall Dem.app

If you can’t uninstall Dem.app using instructions above, or it keeps coming back, you can use free AppCleaner for Mac to remove all residual data and libraries of Dem.app. Follow instructions below:

1. Download free AppCleaner.
2. Drag Dem.app from Applications folder to AppCleaner window.
3. Choose files and folders you want to remove along with Dem.app.
4. Click Delete button.

Remove Dem.app add-on from your browsers

Removing Dem.app from Applications often does not bring the desired effect. It is a browser extension, and it may still be active in Google Chrome and Mozilla Firefox. Here are instructions on how to remove the Dem.app extension from your browsers manually.

Safari:

1. Start Safari on your Mac, click Safari to open drop-down menu and choose Preferences
2. Click Extensions tab.
3. Find Dem.app extension.
4. Click Uninstall button to remove it.

Google Chrome:

1. Start Google Chrome browser
2. In address box type (or copy-paste) chrome://extensions.
3. Find Dem.app extension.
4. Click the trash can icon to remove it.

Mozilla Firefox:

1. Start Mozilla Firefox browser.
2. In address box type (or copy-paste) about:addons.
3. Choose Dem.app extension.
4. Click Disable or Remove button.

Reset browser settings

To finish Dem.app removal, reset your browser settings to make sure, there are no leftover items in browser folders.

Reset Safari:

1. Start Safari on your Mac, click Safari to open drop-down menu and choose Preferences
2. Go to the Privacy section of Safari’s preferences.
3. Click Remove All Website Data button.
4. In the opened window, click Remove Now button to remove data stored by websites in Safari.
5. Go to the Advanced section of Safari’s preferences.
6. Click the Show Develop menu in menu bar option.
7. In the menu, click Develop and select Empty Caches from this menu.
8. Again, go to Safari menu and choose Clear History….
9. Choose to clear all history and click Clear History button.

Reset Google Chrome:

1. Start Google Chrome browser
2. In address box type (or copy-paste) chrome://settings.
3. Scroll down and find Show advanced settings link.
4. Click on it and scroll down to the bottom again.
5. Click Reset settings button and click Reset to confirm.

Reset Mozilla Firefox:

1. Start Mozilla Firefox browser.
2. In address box type (or copy-paste) about:support.
3. Click Refresh Firefox… button.
4. Click Refresh Firefox to confirm.

Remove following files and folders of Dem.app


~/Library/Application Support/.[random_string]/Services/com.Dem.app.service.app
~/Library/LaunchAgents/com.Dem.app.service.plist
/Library/Application Support/.[random_string]/System/com.Dem.app.system
/Library/LaunchDaemons/com.Dem.app.system.plist


Download AdGuard for Mac to block malicious pop-ups, that promote Dem.app

AdGuard is the best ad-blocker, internet filtering, and internet security application for macOS. It can cut out unwanted banners from site pages, block pop-ups, stop redirects, and prevent users from visiting potentially dangerous resources. Use it to stop ads promoting Dem.app in browsers.

Download AdGuard for Mac

How to protect Mac OSX from adware, like Dem.app

Mac OSX is known to be one of the safest operating systems, and for a long time, there was no need for antivirus products for Mac. But with the growing popularity of Mac computers and notebooks and evolving technology, viruses, trojans, adware, toolbars, hijackers, and other malware paved the way for Mac users. We recommend you to use one of the best anti-malware for Mac available — Malwarebytes for Mac.

Download Malwarebytes for Mac