Connect with us

Technology

16 hijacked browser extensions expose 3.2 million users

Published

on

16 hijacked browser extensions expose 3.2 million users

Cybercriminals are constantly finding new ways to exploit trusted apps and browser extensions. 

Since people tend to trust tools that seem legitimate, attackers use them to spread malware or steal sensitive data. A new report reveals that over 3.2 million users have been affected by a security breach involving malicious browser extensions. 

These extensions, which appeared genuine, were secretly embedding harmful scripts, stealing data and manipulating search results. 

STAY PROTECTED & INFORMED! GET SECURITY ALERTS & EXPERT TECH TIPS — SIGN UP FOR KURT’S THE CYBERGUY REPORT NOW

A man using a Chrome browser. (Kurt “CyberGuy” Knutsson)

Advertisement

How were the extensions compromised?

GitLab Security has uncovered a major security breach affecting over 3.2 million users through a network of compromised browser extensions, including some linked to GitLab. The attack stemmed from a supply chain breach, where threat actors infiltrated legitimate extensions and pushed malicious updates. These updates embedded hidden scripts that allowed unauthorized data collection, altered HTTP requests and injected ads into web pages — all without users noticing.

Originally built for tasks like ad blocking, emoji input and screen recording, these extensions were repurposed through covert updates that exploited the extensive permissions users had granted, enabling real-time manipulation of web activity.

Typically, malicious extensions or apps are created solely to steal data, with their advertised functionality being an afterthought or simply a way to get listed in an official store. That was not the case here. These were legitimate extensions that became harmful only after attackers injected malicious updates into them.

An illustration of a hacker at work. (Kurt “CyberGuy” Knutsson)

THE HIDDEN COSTS OF FREE APPS: YOUR PERSONAL INFORMATION

Advertisement

Which extensions are affected?

Several of the compromised extensions are commonly utilized and may be present in your browser. For instance, ad blockers such as AdBlock are valued for eliminating disruptive advertisements and enhancing browsing privacy. However, in this breach, these tools were manipulated to deliver malicious payloads. The following extensions have been identified as affected:

  1. AdBlock Plus
  2. Emoji Keyboard
  3. Screen Capture Pro
  4. Dark Mode Toggle
  5. Grammar Checker
  6. PDF Converter
  7. Weather Forecast
  8. Coupon Finder
  9. Video Downloader
  10. Password Manager
  11. Translate Tool
  12. Privacy Shield
  13. Speed Test
  14. News Reader
  15. Shopping Assistant
  16. VPN Extension

If any of these extensions are installed on your browser, it is recommended that you assess their permissions and consider their removal until official security updates are verified.

The malicious extensions bypassed Content Security Policy protections, which are designed to prevent cross-site scripting attacks, allowing attackers to modify web content without detection. They also communicated with command-and-control servers to receive further instructions, showing a high level of coordination. The attackers exploited the trust users place in the Chrome Web Store and its automatic update system. Investigations suggest this activity has been ongoing since at least July 2024.

Google Chrome on a smartphone. (Kurt “CyberGuy” Knutsson)

FROM TIKTOK TO TROUBLE: HOW YOUR ONLINE DATA CAN BE WEAPONIZED AGAINST YOU

How to remove an extension from Google Chrome

If you have installed one of the above-mentioned extensions on your browser, remove it as soon as possible. To remove an extension from Google Chrome, follow these steps:

Advertisement
  • Open Chrome and click the icon that looks like a piece of a puzzle. You’ll find it in the top-right corner of the browser.
  • You can see all the active extensions now. Click the three dots icon next to the extension you want to remove and select Remove from Chrome.
  • Click Remove to confirm.

WHAT IS ARTIFICIAL INTELLIGENCE (AI)?

Steps to remove an extension from Google Chrome. (Kurt “CyberGuy” Knutsson)

6 ways you can protect your personal data

Here are 6 ways to safeguard your sensitive information and maintain your online privacy:

1. Keep your browser and extensions up-to-date: Outdated software is a goldmine for cybercriminals. Bugs or security gaps in old versions of your browser or extensions can be exploited to inject malicious code, steal data or take control of your system. Updates patch these vulnerabilities, making them a critical line of defense. Turn on automatic updates for your browser (e.g., Chrome, Firefox, Edge) so you’re always running the latest version without thinking about it. See my guide on keeping your devices and apps updated for more information.

2. Install extensions only from trusted sources: Official browser stores like the Chrome Web Store or Firefox Add-ons have rules and scans to catch bad actors, but they’re not perfect. Extensions from random websites or third-party downloads are far more likely to hide malware or spyware. Stick to the official store for your browser — don’t download extensions from sketchy links. 

3. Have strong antivirus software: The best way to safeguard yourself from malicious links that install malware, potentially accessing your private information, is to have antivirus software installed on all your devices. This protection can also alert you to phishing emails and ransomware scams, keeping your personal information and digital assets safe. Get my picks for the best 2025 antivirus protection winners for your Windows, Mac, Android and iOS devices.

Advertisement

4. Be skeptical of extensions requesting unnecessary access: Some extensions overreach on purpose. A calculator tool asking for your browsing history or a weather app wanting your login data is a huge red flag.

Before installing, ask: “Does this permission match the extension’s job?” If the answer’s no, don’t install it. Watch out for broad permissions like “Read and change all your data on websites you visit” unless it’s clearly justified (e.g., a password manager). If an update suddenly adds new permission requests, dig into why. It might mean the extension has been sold or hacked.

5. Update your passwords: Change passwords for any accounts that may have been affected by the incident, and use unique, strong passwords for each account. Consider using a password manager. This can help you generate and store strong, unique passwords for all your accounts. Get more details about my best expert-reviewed Password Managers of 2025 here.

6. Remove your personal data from public databases: If your personal data was exposed in this security incident, it’s crucial to act quickly to reduce your risk of identity theft and scams. While no service can guarantee the complete removal of your data from the internet, a data removal service is really a smart choice. They aren’t cheap — and neither is your privacy. These services do all the work for you by actively monitoring and systematically erasing your personal information from hundreds of websites. It’s what gives me peace of mind and has proven to be the most effective way to erase your personal data from the internet. By limiting the information available, you reduce the risk of scammers cross-referencing data from breaches with information they might find on the dark web, making it harder for them to target you. Check out my top picks for data removal services here.

Advertisement

MASSIVE SECURITY FLAW PUTS MOST POPULAR BROWSERS AT RISK ON MAC

Kurt’s key takeaways

Browser extensions can improve functionality but also pose significant security risks if not carefully managed. If you have any of the above extensions installed in Chrome, you should remove them immediately. Treat your browser as a key part of your digital security. Regularly check your extensions, remove unnecessary permissions and be cautious about automatic updates, even from trusted sources.

Should browsers implement stricter restrictions on what extensions can do by default? Let us know by writing us at Cyberguy.com/Contact

For more of my tech tips and security alerts, subscribe to my free CyberGuy Report Newsletter by heading to Cyberguy.com/Newsletter

Advertisement

Ask Kurt a question or let us know what stories you’d like us to cover.

Follow Kurt on his social channels:

Answers to the most-asked CyberGuy questions:

New from Kurt:

Copyright 2025 CyberGuy.com. All rights reserved.

Advertisement

Technology

Here’s your first look at Kratos in Amazon’s God of War show

Published

on

Here’s your first look at Kratos in Amazon’s God of War show

Amazon has slowly been teasing out casting details for its live-action adaptation of God of War, and now we have our first look at the show. It’s a single image but a notable one showing protagonist Kratos and his son Atreus. The characters are played by Ryan Hurst and Callum Vinson, respectively, and they look relatively close to their video game counterparts.

There aren’t a lot of other details about the show just yet, but this is Amazon’s official description:

The God of War series storyline follows father and son Kratos and Atreus as they embark on a journey to spread the ashes of their wife and mother, Faye. Through their adventures, Kratos tries to teach his son to be a better god, while Atreus tries to teach his father how to be a better human.

That sounds a lot like the recent soft reboot of the franchise, which started with 2018’s God of War and continued through Ragnarök in 2022. For the Amazon series, Ronald D. Moore, best-known for his work on For All Mankind and Battlestar Galactica, will serve as showrunner. The rest of the cast includes: Mandy Patinkin (Odin), Ed Skrein (Baldur), Max Parker (Heimdall), Ólafur Darri Ólafsson (Thor), Teresa Palmer (Sif), Alastair Duncan (Mimir), Jeff Gulka (Sindri), and Danny Woodburn (Brok).

While production is underway on the God of War series, there’s no word on when it might start streaming.

Advertisement
Continue Reading

Technology

300,000 Chrome users hit by fake AI extensions

Published

on

300,000 Chrome users hit by fake AI extensions

NEWYou can now listen to Fox News articles!

Your web browser may feel like a safe place, especially when you install helpful tools that promise to make your life easier. But security researchers have uncovered a dangerous campaign in which more than 300,000 people installed Chrome extensions pretending to be artificial intelligence (AI) assistants. Instead of helping, these fake tools secretly collect sensitive information like your emails, passwords and browsing activity.

They used familiar names like ChatGPT, Gemini and AI Assistant. If you use Chrome and have installed any AI-related extension, your personal information may already be exposed. Even worse, some of these malicious extensions are still available today, putting more people at risk without their knowing.

Sign up for my FREE CyberGuy Report
Get my best tech tips, urgent security alerts and exclusive deals delivered straight to your inbox. Plus, you’ll get instant access to my Ultimate Scam Survival Guide – free when you join my CYBERGUY.COM newsletter.

More than 300,000 Chrome users installed fake AI extensions that secretly harvested sensitive data. (Kurt “CyberGuy” Knutsson)

Advertisement

What you need to know about fake AI extensions

Security researchers at browser security company LayerX discovered a large campaign involving 30 malicious Chrome extensions disguised as AI-powered assistants (via BleepingComputer). Together, these extensions were installed more than 300,000 times by unsuspecting users.

Some of the most popular extensions included names like AI Sidebar with 70,000 users, AI Assistant with 60,000 users, ChatGPT Translate with 30,000 users, and Google Gemini with 10,000 users. Another extension called Gemini AI Sidebar had 80,000 users before it was removed.

These extensions were distributed through the official Chrome Web Store, which made them appear legitimate and trustworthy. Even more concerning, researchers found that many of these extensions were connected to the same malicious server, showing they were part of a coordinated effort.

While some extensions have since been removed, others remain available. This means new users could still unknowingly install them and expose their personal data. Here’s the list of the affected extensions:

  • AI Assistant
  • Llama
  • Gemini AI Sidebar
  • AI Sidebar
  • ChatGPT Sidebar
  • Grok
  • Asking ChatGPT
  • ChatGBT
  • Chat Bot GPT
  • Grok Chatbot
  • Chat With Gemini
  • XAI
  • Google Gemini
  • Ask Gemini
  • AI Letter Generator
  • AI Message Generator
  • AI Translator
  • AI For Translation
  • AI Cover Letter Generator
  • AI Image Generator ChatGPT
  • Ai Wallpaper Generator
  • Ai Picture Generator
  • DeepSeek Download
  • AI Email Writer
  • Email Generator AI
  • DeepSeek Chat
  • ChatGPT Picture Generator
  • ChatGPT Translate
  • AI GPT
  • ChatGPT Translation
  • ChatGPT for Gmail

FAKE AI CHAT RESULTS ARE SPREADING DANGEROUS MAC MALWARE

These malicious tools were listed in the official Chrome Web Store, making them appear legitimate and trustworthy. (LayerX)

Advertisement

How the fake AI Chrome extension attack works

These fake extensions pretend to offer helpful AI features, such as translating text, summarizing emails, or acting as an AI assistant. But behind the scenes, they quietly monitor what you are doing online.

Once installed, the extension gains permission to view and interact with the websites you visit. This allows it to read the contents of web pages, including login screens where you enter your username and password.

In some cases, the extensions specifically targeted Gmail. They could read your email messages directly from your browser, including emails you received and even drafts you were still writing. This means attackers could access private conversations, financial information and sensitive personal details.

The extensions then sent this information to servers controlled by the attackers. Because they loaded content remotely, the attackers could change their behavior at any time without needing to update the extension.

Some versions could also activate voice features through your browser. This could potentially capture spoken conversations near your device and send transcripts back to the attackers.

Advertisement

If you installed one of these extensions, attackers may already have access to extremely sensitive information. This includes your email content, login credentials, browsing habits and possibly even voice recordings.

We reached out to Google for comment, and a spokesperson told CyberGuy that the company “can confirm that the extensions from this report have all been removed from the Google Web Store.”

BROWSER EXTENSION MALWARE INFECTED 8.8M USERS IN DARKSPECTRE ATTACK

Once installed, the extensions could read emails, capture passwords, monitor browsing activity and send the data to attacker-controlled servers. (Bildquelle/ullstein bild via Getty Images)

7 ways you can protect yourself from malicious Chrome extensions

If you have ever installed an AI-related Chrome extension, taking a few simple precautions now can help protect your accounts and prevent further damage.

Advertisement

1) Remove any suspicious or unused browser extensions

On a Windows PC or Mac, open Chrome and type chrome://extensions into the address bar. Review every extension listed. If you see anything unfamiliar, especially AI assistants you don’t remember installing, click “Remove” immediately. Malicious extensions depend on going unnoticed. Removing them stops further data collection and cuts off the attacker’s access to your information.

2) Change your passwords

If you installed any suspicious extension, assume your passwords may be compromised. Start by changing your email password first, since email controls access to most other accounts. Then update passwords for banking, shopping and social media accounts. This prevents attackers from using stolen credentials to break into your accounts.

3) Use a password manager to create and protect strong passwords

A password manager generates unique, complex passwords for each account and stores them securely. This prevents attackers from accessing multiple accounts if one password is stolen. Password managers also alert you if your login credentials appear in known data breaches, helping you respond quickly and protect your identity. Check out the best expert-reviewed password managers of 2026 at Cyberguy.com.

4) Install strong antivirus software and keep it active

Good antivirus software can detect malicious browser extensions, spyware, and other hidden threats. It scans your system for suspicious activity and blocks harmful programs before they can steal your information. This adds an important layer of protection that works continuously in the background to keep your device safe. Get my picks for the best 2026 antivirus protection winners for your Windows, Mac, Android & iOS devices at Cyberguy.com.

5) Use an identity theft protection service

Identity theft protection services monitor your personal data, including email addresses, financial accounts, and Social Security numbers, for signs of misuse. If criminals try to open accounts or commit fraud using your information, you receive alerts quickly. Early detection allows you to act fast and limit financial and personal damage. See my tips and best picks on how to protect yourself from identity theft at Cyberguy.com.

Advertisement

6) Keep your browser and computer fully updated

Software updates fix security vulnerabilities that attackers exploit. Enable automatic updates for Chrome and your operating system so you always have the latest protections. These updates strengthen your defenses against malicious extensions and prevent attackers from taking advantage of known weaknesses.

7) Use a personal data removal service

Personal data removal services scan data broker websites that collect and sell your personal information. They help remove your data from these sites, reducing what attackers can find and use against you. Less exposed information means fewer opportunities for criminals to target you with scams, identity theft or phishing attacks.

Check out my top picks for data removal services and get a free scan to find out if your personal information is already out on the web by visiting Cyberguy.com.

Get a free scan to find out if your personal information is already out on the web: Cyberguy.com.

Kurt’s key takeaway

Even tools designed to make your life easier can become tools for cybercriminals. Malicious extensions often hide behind trusted names and convincing features, making them difficult to spot. You can significantly reduce your risk by reviewing your browser extensions regularly, removing anything suspicious and using protective tools like password managers and strong antivirus software.

Advertisement

Have you checked your browser extensions recently? Let us know your thoughts by writing to us at Cyberguy.com.

CLICK HERE TO DOWNLOAD THE FOX NEWS APP

Sign up for my FREE CyberGuy Report 
Get my best tech tips, urgent security alerts and exclusive deals delivered straight to your inbox. Plus, you’ll get instant access to my Ultimate Scam Survival Guide – free when you join my CYBERGUY.COM newsletter.

Copyright 2026 CyberGuy.com. All rights reserved.

Advertisement

Related Article

Malicious browser extensions hit 4.3M users
Continue Reading

Technology

Anthropic refuses Pentagon’s new terms, standing firm on lethal autonomous weapons and mass surveillance

Published

on

Anthropic refuses Pentagon’s new terms, standing firm on lethal autonomous weapons and mass surveillance

Less than 24 hours before the deadline in an ultimatum issued by the Pentagon, Anthropic has refused the Department of Defense’s demands for unrestricted access to its AI.

It’s the culmination of a dramatic exchange of public statements, social media posts, and behind-the-scenes negotiations, coming down to Defense Secretary Pete Hegseth’s desire to renegotiate all AI labs’ current contracts with the military. But Anthropic, so far, has refused to back down from its two current red lines: no mass surveillance of Americans, and no lethal autonomous weapons (or weapons with license to kill targets with no human oversight whatsoever). OpenAI and xAI had reportedly already agreed to the new terms, while Anthropic’s refusal had led to CEO Dario Amodei being summoned to the White House this week for a meeting with Hegseth himself, in which the Secretary reportedly issued an ultimatum to the CEO to back down by the end of business day on Friday or else.

In a statement late Thursday, Amodei wrote, “I believe deeply in the existential importance of using AI to defend the United States and other democracies, and to defeat our autocratic adversaries. Anthropic has therefore worked proactively to deploy our models to the Department of War and the intelligence community.”

He added that the company has “never raised objections to particular military operations nor attempted to limit use of our technology in an ad hoc manner” but that in a “narrow set of cases, we believe AI can undermine, rather than defend, democratic values” — going on to specifically mention mass domestic surveillance and fully autonomous weapons. (Amodei mentioned that “partial autonomous weapons … are vital to the defense of democracy” and that fully autonomous weapons may eventually “prove critical for our national defense,” but that “today, frontier AI systems are simply not reliable enough to power fully autonomous weapons.” He did not rule out Anthropic acquiescing to the military’s use of fully autonomous weapons in the future but mentioned that they were not ready now.)

The Pentagon had already reportedly asked major defense contractors to assess their dependence on Anthropic’s Claude, which could be seen as the first step to designating the company a “supply chain risk” – a public threat that the Pentagon had made recently (and a classification usually reserved for threats to national security). The Pentagon was also reportedly considering invoking the Defense Production Act to make Anthropic comply.

Advertisement

Amodei wrote in his statement that the Pentagon’s “threats do not change our position: we cannot in good conscience accede to their request.” He also wrote that “should the Department choose to offboard Anthropic, we will work to enable a smooth transition to another provider, avoiding any disruption to ongoing military planning, operations, or other critical missions. Our models will be available on the expansive terms we have proposed for as long as required.”

Continue Reading

Trending