A browser hijacker is a type of malicious software that alters your web browser's settings without your permission. You might notice your homepage has changed, your default search engine redirects to an unfamiliar site, or you are suddenly bombarded with intrusive pop-up ads. Beyond being annoying, hijackers can track your browsing habits and lead you to more dangerous phishing sites. This guide provides a step-by-step process to reclaim your browser and secure your data.

Step 1: Uninstall Suspicious Programs from Your OS

Many hijackers enter your system bundled with free software. Before cleaning the browser itself, you must remove the source from your computer.

• For Windows: Open Settings > Apps > Installed Apps. Look for any software you don't recognize or that was installed right before the hijacking began. Click the three dots and select Uninstall.
• For macOS: Open Finder > Applications. Drag any suspicious or unknown apps to the Trash and empty it.

Step 2: Remove Malicious Browser Extensions

The most common home for a hijacker is within a malicious extension. Even if an extension looks helpful (like a 'PDF Converter' or 'Weather Tool'), it could be the culprit.

• Google Chrome: Type chrome://extensions/ in the address bar. Review every extension. If you see something you didn't intentionally install, click Remove.
• Microsoft Edge: Type edge://extensions/ and toggle off or remove suspicious add-ons.
• Safari: Go to Settings > Extensions and uninstall any unknown items.

Step 3: Reset Your Search Engine and Homepage

After removing the extension, you must manually fix the settings the hijacker modified.

• Go to your browser Settings.
• Look for the Search Engine section. Ensure it is set to a trusted provider like Google, Bing, or DuckDuckGo. Remove any 'Search.com' or 'CoolWebSearch' style entries.
• Check the On Startup section. If it is set to 'Open a specific page or set of pages,' ensure the URL listed is one you recognize. If not, click Remove or change it to 'Open the New Tab page.'

Step 4: Clear Your Browser Cache and Cookies

Hijackers often leave behind tracking cookies that can re-infect your session or continue to track your activity even after the extension is gone.

• In your browser settings, navigate to Privacy and Security.
• Select Clear Browsing Data.
• Ensure you select 'All time' as the time range and check the boxes for Cookies and Cached images and files. Click Clear data.

Step 5: Perform a Deep Malware Scan

To ensure no hidden files remain in your system folders (like temporary files or registry keys), you should run a dedicated malware removal tool.

• Download and install a reputable scanner like Malwarebytes or use the built-in Windows Security (Windows Defender).
• Run a Full Scan rather than a Quick Scan to check every corner of your hard drive.
• If the software identifies PUPs (Potentially Unwanted Programs) or Adware, allow the tool to Quarantine and delete them.

Step 6: Reset Browser to Default Settings (Optional)

If the hijacker persists or your browser still feels 'off,' the most effective 'nuclear option' is a full reset. This will disable all extensions and reset all settings to their original state.

• In Chrome/Edge settings, go to Reset settings.
• Click Restore settings to their original defaults.
• Confirm by clicking Reset settings. Note: This will not delete your bookmarks or passwords, but it will clear your temporary data and disable extensions.

💡 Pro Tip: Keep your software updated to avoid these issues in the future.