Browser hijackers are a form of cyberattack that can redirect your web searches and inject unwanted ads, often with malware, into yor web browser. While they may not be as damaging as ransomware or Trojans, browser hijackers can be potentially harmful.
What is a Browser Hijacker?
A browser hijacker is a type of malware that alters your browser settings without your consent. These changes can include modifying your homepage, redirecting your web searches to different sites, injecting unwanted advertisements, and even exposing you to other types of malware.
How Browser Hijackers Work
Browser hijackers are often downloaded via email attachments, infected files, or malicious websites. They can also be bundled with freeware, adware, or spyware. Once installed, the malware uses code to modify your browser’s settings, often without your knowledge.
The Intent Behind Browser Hijacking
Browser hijackers can serve multiple purposes for cybercriminals. They can generate fraudulent ad revenue, install spyware to steal personal data like credit card numbers, or even install ransomware to lock your browser until a ransom is paid.
Signs of a Browser Hijack
Recognizing a browser hijack can be tricky as the symptoms are often subtle and disguised as minor inconveniences. Here are some signs to look out for:
- Redirects: You’re taken to websites you never intended to visit.
- Pop-ups: Annoying advertisement windows appear out of nowhere.
- Unwanted Browser Toolbars: New, usually unsolicited, toolbars appear on your browser.
- Fake Antivirus Messages: You receive warnings or notifications that seem to be from your antivirus software but are actually fraudulent.
How to Deal with a Browser Hijack
Clear DNS Cache
DNS cache poisoning is a technique used by browser hijackers. Clearing your DNS cache can sometimes remove the hijacker.
Reset Browser Homepage Settings
Restoring your preferred homepage settings can be a quick fix to counter the hijacker’s automatic redirects.
Disable Unwanted Add-ons and Extensions
Add-ons and extensions can be weaponized by browser hijackers. Disabling unfamiliar or unused ones can help resolve the issue.
Reinstall Your Browser
As a more drastic measure, reinstalling your browser can be effective. This step usually removes all add-ons and customizations, offering a clean slate.
Keep Systems Updated
Regularly updating your operating system and browser can safeguard against known vulnerabilities.
Utilize Specialized Tools
Programs like Emsisoft Emergency Kit and Malwarebytes AdwCleaner specialize in removing browser hijackers and spyware.
Report the Issue
If you encounter a malicious redirect, inform the webmaster of the issue.
Install an Anti-Phishing Browser Extension
Anti-phishing browser extensions can block phishing attacks and access to malicious websites.
Additional User Actions
- Keep Your Browser Updated: Major browsers release updates to enhance security. Make sure to install these updates.
- Use Antivirus Software: Reliable antivirus software can stop malware before it infects your PC.
Conclusion
Browser hijackers may seem like a minor nuisance, but their potential risks should not be underestimated. They can open doors to more nefarious malware, including keyloggers and ransomware.
The steps above offer a multi-layered approach to diagnosing and treating a browser hijack. Prevention, however, is the best cure. Regularly update your system and browser, be cautious about the extensions you install, and consider running scheduled scans with specialized tools to ensure your digital browsing experience remains secure.
By following these steps, you not only reclaim your browser but also arm yourself with the knowledge and tools to prevent future attacks.