How to disable spam, advertising and notifications in Google Chrome on Android

The sudden appearance of annoying ads, pop-ups or strange notifications on the smartphone screen is a common problem faced by users Google Chrome on the platform Android. Most often, this is not a virus in the classical sense, but the result of allowing sites to send push notifications or installing third-party extensions that abuse access to the system.

This spam is not only annoying, but can also significantly waste battery power, and also push the user to switch to phishing resources. Fortunately, the browser's built-in protection mechanisms can effectively combat this scourge without the need to reset the device to factory settings. In this article, we will analyze in detail all the steps to clear your browser of junk.

First, you need to understand the nature of the problem. Most often, the user himself, accidentally clicking on the “Allow” button when visiting a dubious resource, agrees to display notifications. This permission is saved in the browser settings, and the site begins sending messages even when the browser is closed. We will look at how to find and block these sources.

The main reason for spam: analyzing site permissions

The first and most effective step is to check the list of sites that you have previously given permission to send notifications. This list is the main source of annoying push notifications. To get to the desired section, open the browser and click on the three vertical dots in the upper right corner of the screen to open the menu.

In the list that opens, select the item Settings. Next, scroll down to the "Site Settings" section. All key security and access settings are hidden here. Find the item Notifications and click on it. You will see a list of all resources that have the right to send you messages.

Please study this list carefully. Often there are sites with suspicious names or resources that you visited once many months ago. If you see an unfamiliar sender or a site that clearly shouldn't be writing to you, revoke permission immediately. To do this, click on the name of the site and select the option Block or remove it from the list completely.

⚠️ Attention: If the list of permissions is empty, but ads still appear, the problem may not be with Chrome notifications, but with a malicious application installed on the Android system that uses your browser to display windows.

It is also worth paying attention to the pop-up window settings. In the same "Site Settings" section, find the item Pop-up windows and redirects. Make sure the switch is in the "Locked" position. This will prevent new tabs with advertisements from automatically opening when you visit various web pages.

Clearing cache and browser data to completely reset settings

If manually blocking sites did not completely eliminate the problem, it is possible that malicious software has accumulated in the browser's memory scripts or corrupted cache files. In this case, you need to perform a deep cleanup of application data Chrome. This action will return the browser to the “as after installation” state, but will save your bookmarks if they are synchronized with your Google account.

To perform this procedure, you will need to go outside the browser itself and go to the system settings of your smartphone. Find the Applications or Application Manager section in the main Android settings menu. In the list of all installed apps, find Google Chrome and click on it.

In the application menu, select Memory or Storage. Here you will see two important buttons: "Clear cache" and "Clear data". First try clicking "Clear cache". This is safe and will remove temporary files that can cause crashes.

• 🗑️ Cache is temporary files of images and scripts that speed up page loading, but sometimes contain errors.
• 🔒 Data - this is all information about sessions, settings and site permissions inside the browser.
• 🔄 Resetting the data will force you to re-login to your accounts on sites, but will remove malicious permissions.
• 📂 Bookmarks and passwords will be saved if synchronization with the Google cloud is enabled.

If clearing the cache does not gave a result, use the button Clear data (or "Reset"). The system will warn you that all settings will be deleted. Confirm the action. After this, launch your browser again. It will look like new, and all previously granted permissions for spam notifications will be revoked.

Blocking malicious sites and protecting against phishing

Modern versions Google Chrome have built-in protection mechanisms that automatically warn the user about dangerous sites. However, these features may be accidentally disabled or may not work properly due to outdated software. Make sure the protection is active to prevent re-infection.

Return to your browser settings through the three-dot menu. Find the section Privacy and Security. The item Safe Browsingis located here. Make sure that the "Advanced Protection" or at least "Standard Protection" mode is selected. The No Security mode is strongly discouraged as it disables real-time URL checking.

Function Safe browsing checks the URLs you visit against Google's database, containing millions of known phishing and malicious sites. If you try to go to a resource that distributes spam or viruses, the browser will block access and display a red warning screen.

It is also recommended to check your cookie settings in this section. Go to Cookies and select the "Block third-party cookies" option. This will limit the ability of advertising networks to track your actions across different sites and reduce the amount of targeted spam.

Search and remove malicious applications in the Android system

Sometimes the source of advertising lies not in the browser itself, but in a third-party application that you recently installed. Such apps are often disguised as useful utilities: flashlights, QR code scanners, memory cleaners, or simple games. They work in the background and generate advertisements on top of all windows.

To identify such a parasite, carefully review the list of all installed applications. Log in Settings → Applications. Look for apps without an icon, with a transparent icon, or with a name consisting of a string of characters. Also pay attention to the applications that you installed shortly before the problems appeared.

If you find a suspicious application, try removing it in the standard way. However, some malware blocks access to its delete button or hides from the list. In this case, try loading your smartphone into Safe Mode. Usually, to do this, you need to hold down the power button on the screen, and then hold down the “Shut down” or “Reboot” item for a long time until you are prompted to enter safe mode.

Threat type	Symptoms	Method removal
Spam notifications	Messages in the notification curtain from sites	Revocation of permissions in Chrome settings
Pop-up advertising	Windows appear on top of others applications	Removing a malicious application in Android settings
Redirection	The browser itself opens unknown sites	Clearing browser data and resetting network settings
Hidden miner	The phone gets very hot and quickly discharges	Search for applications with high CPU consumption and remove

Only system applications work in safe mode. If the advertising disappears in this mode, then third-party software is to blame. Uninstall recently installed apps one at a time until the problem goes away. After cleaning, restart your phone in normal mode.

What to do if the application is not uninstalled?

If the "Delete" button is inactive, the malicious application may have gained device administrator rights. Go to Settings → Security → Device Administrators and uncheck the suspicious application. After this, it can be deleted in the usual way.

Using ad blockers and DNS filtering

For those who want to provide maximum protection against spam and advertising at the entire system level, and not just the browser, an excellent solution is to set up a private DNS. This method does not require the installation of additional applications and effectively cuts off advertising requests before they reach your device.

Starting with version Android 9, the system has a "Private DNS" function. To activate it, go to the phone settings, to the Connections or Network and Internetsection. Find the item Private DNS (may be in the "Advanced settings" section).

Select the "DNS provider host name" mode and enter the address of a trusted filter. One of the most popular and effective services is AdGuard DNS. In the input field you must enter the following address:

dns.adguard.com

Save the settings. Now all requests to known advertising and tracker servers will be blocked at the network level. This will significantly reduce the number of pop-up windows in Chrome and other applications. Please note that this method can sometimes slow down the loading of some sites or disrupt the work of certain services if they aggressively use advertising.

• 🛡️ Private DNS filters traffic for all applications, not just the browser.
• ⚡ The method does not consume the battery, unlike those running in the background application blockers.
• 🔧 To cancel the settings, simply select the "Auto" mode in the Private DNS menu.

⚠️ Attention: The network settings interface may differ depending on the model of your smartphone (Samsung, Xiaomi, Pixel, etc.). If you cannot find the "Private DNS" item, use the search settings or install the AdGuard application from the official store.

Prevention: how to avoid spam reappearance

After you have successfully cleaned your device, it is important to practice good digital hygiene so that the problem does not return. The main cause of infection is user inattention when surfing the Internet. Never click on the bright buttons “Your phone is infected!”, “You have won an iPhone” or “Click to download a video” if you did not initiate this action yourself.

Try to download applications only from the official store Google Play Market. Although malware sometimes sneaks in there, the Google Play Protect system checks them much more thoroughly than files downloaded from third-party forums or torrent trackers. Regularly update the browser itself Chrome and the Android operating system, as updates often contain security patches.

Periodically review installed applications. If you see a app that you haven't used for several months, or a utility with a dubious rating and a small number of reviews, it is better to delete it. The less extraneous code on your device, the lower the risk of spam.

Frequently asked questions (FAQ)

Why do ads appear even after uninstalling the application?

This may happen because the permission to show notifications remains in the settings of the Chrome browser itself. Even if the originating site no longer exists or the application is deleted, a record of the permission is stored in the browser's database. You need to go to Chrome Settings → Site Settings → Notifications and manually remove all suspicious addresses.

Can a virus in Chrome steal my passwords?

Notification spam itself usually does not steal data. However, if you clicked on the link in such a notification and entered your information on a fake site (phishing), your passwords may be stolen. Always check the address bar before entering sensitive information and use a password manager with two-factor authentication.

Will installing an antivirus help remove spam from your browser?

An antivirus can help detect and remove malicious applications that generate ads. However, it cannot always revoke permissions that you yourself have given to sites in the browser. Therefore, an integrated approach (antivirus + manual cleaning of Chrome settings) is the most effective solution.

Is it safe to reset your browser settings to factory settings?

Yes, it is safe. Resetting your browser will clear your history, cache, cookies, and site permissions. Your bookmarks, saved passwords, and sync history will remain intact as long as you're signed in to your Google Account. After the reset, you will simply need to re-enter some sites.

What to do if the delete application button is gray and cannot be pressed?

Most likely, the malicious application has received device administrator rights. Go to Phone Settings → Security → Device Administrators (or Settings → Applications → Accessibility → Administrators). Find the suspicious application in the list, uncheck it and confirm deactivation. After that, you can delete it in the usual way.