Surfing the web is an integral part of our lives. But as you browse, criminals attempt to secretly hijack your web browser. These hijackers can steal your data and expose you to other types of cybercrime.
This detailed guide will explain what browser hijacking is, why attacks are rapidly growing, and most importantly – how you can protect yourself.
What Exactly is a Browser Hijacker?
A browser hijacker is a type of malware that attaches itself to web browsers like Chrome, Firefox or Safari. Without the user‘s permission, the hijacker can change browser settings, redirect to unwanted pages, or monitor user activity.
Hijackers frequently alter the browser‘s homepage and default search engine. But threats can also manipulate much more. Other behaviors observed include:
- Tracking browsing history, searches and form data entered
- Launching popups, ads and offers in the browser
- Changing security settings to stay persistent on the device
- Redirecting users to affiliate offers, phishing pages and scam sites
Browser hijacking poses an insidious threat – unlike blocking ads or slow page loads, infected browsers silently expose users to follow-on cybercrimes.
The Alarming Spread of Browser Hijackers
Browser hijacking attacks have exploded in prevalence the past few years:
- 153% increase in browser modifier detections from 2020 to 2021 according to AV-Test Institute
- 10 million browser hijacking software installations a month per Cisco Talos
- Upwards of 50 million active infections found on home computers by browser protection firms
This epidemic stems primarily from software bundling partnerships. Major brands like Oracle, Download.com, SourceForge and others bundle browser mods with installations.
Most users are unaware as they click through dialogs to install the desired program. Meanwhile, the browser attachment secretly activates in the background.
The long term risks to users are real…
Consequences: Why Browser Hijacking Matters
At first glance, a browser hijacker alters some settings which is annoying but seemingly harmless. However they open the door to cybercriminals in less visible ways:
Credential Theft
Modified browsers are frequently misdirected to phishing sites. These fakes spoof banking, webmail and other critical services in attempt to steal account logins and passwords.
Tracking and Behavior Profiling
Implanted browser spies log browsing activity including searches and sites visited. They assemble rich interest and demographic data prized by advertisers and hackers seeking targets.
Ransomware Downloads
With control of redirect functionality, hijackers send victims to malware-laced pages distributing ransomware, botnet agents, and spyware.
Cryptojacking
Some browser malware secretly background mines cryptocurrency using the host computer‘s resources. This drains power while gradually damaging hardware.
Without realizing, compromised browsers elevate exposure to damaging follow-on attacks. But protection only requires a few proactive precautions…
Securing Yourself Against Browser Hijacking
Stopping these sophisticated threats begins with understanding how browser hijackers function technically:
With insight into hijacker methods, we can disrupt key steps:
#1: Block Bundleware Downloads
Avoid installers from less trustworthy brands, especially "free" utilities like converters, file compressors and media players that monetize via bundling.
| Trusted Software Sources | Riskier Bundlers |
|---|---|
| Microsoft Store | Oracle |
| Apple App Store | Download.com |
| Software vendor sites | Sourceforge |
| Github repositories | MajorGeeks |
#2: Harden Browser Security Settings
Restrict extension installations only from browser stores. Also manually inspect currently added extensions under Settings.
Tighten permissions on cookies, scripts, popups and notifications which leaks data. reference Firefox‘s privacy guide.
#3: Keep Everything Patched and Updated
Hackers exploit outdated software like browsers and plugins. Regularly install updates via Settings menu.
#4: Use Security Software with Browser Protection
Mainstream antivirus focuses on file/app scanning. Complement with a web shield like Norton 360 which blocks browser takeovers.
Advanced endpoint security platforms utilize behavior analysis to catch hard-to-detect browser injection attempts. This provides vital zero-day defense.
#5 Practice Safe Browsing Habits
Remain wary of online ads, deals and unrecognized emails avoid clicking risks. Use an ad blocker extension which suppresses malware.
Stick to reputable, recognizable websites when entering sensitive information.
Final Thoughts
Vigilance is required when browsing in 2023 and beyond. Cybercriminals aggressively peddle browser modifying malware due to its money making potential and gateway threats introduced.
However, with heightened understanding of hijacker mechanics and vectors, you can certainly shield your online experience. Consistently applying the above smart precautions will avoid meaningful risk.
Here‘s to safe, pleasant and protected browsing! Let me know if you have any other browser security questions.
