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Search results for chrome:/extensions/ | Breaking Cybersecurity News | The Hacker News

Google Announces 5 Major Security Updates for Chrome Extensions

Google Announces 5 Major Security Updates for Chrome Extensions

Oct 02, 2018
Google has made several new announcements for its Chrome Web Store that aims at making Chrome extensions more secure and transparent to its users. Over a couple of years, we have seen a significant rise in malicious extensions that appear to offer useful functionalities, while running hidden malicious scripts in the background without the user's knowledge. However, the best part is that Google is aware of the issues and has proactively been working to change the way its Chrome web browser handles extensions. Earlier this year, Google banned extensions using cryptocurrency mining scripts and then in June, the company also disabled inline installation of Chrome extensions completely. The company has also been using machine learning technologies to detect and block malicious extensions. To take a step further, Google announced Monday five major changes that give users more control over certain permissions, enforces security measures, as well as makes the ecosystem more t...
500 Chrome Extensions Caught Stealing Private Data of 1.7 Million Users

500 Chrome Extensions Caught Stealing Private Data of 1.7 Million Users

Feb 14, 2020
Google removed 500 malicious Chrome extensions from its Web Store after they found to inject malicious ads and siphon off user browsing data to servers under the control of attackers. These extensions were part of a malvertising and ad-fraud campaign that's been operating at least since January 2019, although evidence points out the possibility that the actor behind the scheme may have been active since 2017. The findings come as part of a joint investigation by security researcher Jamila Kaya and Cisco-owned Duo Security, which unearthed 70 Chrome Extensions with over 1.7 million installations. Upon sharing the discovery privately with Google, the company went on to identify 430 more problematic browser extensions, all of which have since been deactivated. "The prominence of malvertising as an attack vector will continue to rise as long as tracking-based advertising remains ubiquitous, and particularly if users remain underserved by protection mechanisms," sa...
Two Widely Used Ad Blocker Extensions for Chrome Caught in Ad Fraud Scheme

Two Widely Used Ad Blocker Extensions for Chrome Caught in Ad Fraud Scheme

Sep 20, 2019
Two widely used Adblocker Google Chrome extensions , posing as the original — AdBlock and uBlock Origin — extensions on Chrome Web Store, have been caught stuffing cookies in the web browser of millions of users to generate affiliate income from referral schemes fraudulently. There's no doubt web extensions add a lot of useful features to web browsers, making your online experience great and aiding productivity, but at the same time, they also pose huge threats to both your privacy and security. Being the most over-sighted weakest link in the browser security model, extensions sit between the browser application and the Internet — from where they look for the websites you visit and subsequently can intercept, modify, and block any requests, based on the functionalities they have been designed for. Apart from the extensions which are purposely created with malicious intent , in recent years we have also seen some of the most popular legitimate Chrome and Firefox extensions g...
cyber security

7 Security Best Practices for MCP

websiteWizMCP Security / Cloud Security
Learn what security teams are doing to secure their AI integrations without slowing innovation. This cheat sheet outlines 7 best practices you can start using today.
cyber security

2025 Gartner® MQ Report for Endpoint Protection Platforms (July 2025 Edition)

websiteSentinelOneEndpoint Protection / Unified Security
Compare leading Endpoint Protection vendors and see why SentinelOne is named a 5x Leader.
100+ Fake Chrome Extensions Found Hijacking Sessions, Stealing Credentials, Injecting Ads

100+ Fake Chrome Extensions Found Hijacking Sessions, Stealing Credentials, Injecting Ads

May 20, 2025 Credential Theft / Browser Security
An unknown threat actor has been attributed to creating several malicious Chrome Browser extensions since February 2024 that masquerade as seemingly benign utilities but incorporate covert functionality to exfiltrate data, receive commands, and execute arbitrary code. "The actor creates websites that masquerade as legitimate services, productivity tools, ad and media creation or analysis assistants, VPN services, crypto, banking and more to direct users to install corresponding malicious extensions on Google's Chrome Web Store (CWS)," the DomainTools Intelligence (DTI) team said in a report shared with The Hacker News. While the browser add-ons appear to offer the advertised features, they also enable credential and cookie theft, session hijacking, ad injection, malicious redirects, traffic manipulation, and phishing via DOM manipulation. Another factor that works in the extensions' favor is that they are configured to grant themselves excessive permissions via...
7 Chrome Extensions Spreading Through Facebook Caught Stealing Passwords

7 Chrome Extensions Spreading Through Facebook Caught Stealing Passwords

May 11, 2018
Luring users on social media to visit lookalike version of popular websites that pop-up a legitimate-looking Chrome extension installation window is one of the most common modus operandi of cybercriminals to spread malware. Security researchers are again warning users of a new malware campaign that has been active since at least March this year and has already infected more than 100,000 users worldwide. Dubbed Nigelthorn, the malware is rapidly spreading through socially engineered links on Facebook and infecting victims' systems with malicious browser extensions that steal their social media credentials, install cryptocurrency miners, and engage them in click fraud. The malware was pushed through at least seven different Chrome browser extensions—all were hosted on Google's official Chrome Web Store. These malicious Chrome browser extensions were first discovered by researchers at cybersecurity firm Radware, after a "well-protected network" of one of its custo...
Google Removes 200 Ad-Injectors Chrome Extensions

Google Removes 200 Ad-Injectors Chrome Extensions

Apr 02, 2015
In the War against Ad injectors , Google has started removing ad-injecting extensions for its Chrome browser after it discovered as many as 200 Chrome extensions that exposed Millions of its users to malicious software and fraudulent activities. While working with a team of researchers from the University of California, Berkeley, the search engine giant found that over 5 percent of its users were infected with ' Ad Injectors ' — software that inserts ads or replace existing ads into the pages you visit while browsing the web. In last three months, Google received more than 100,000 complaints from its Chrome users about ad injection, which is far more than what the company receives for network errors, performance problems, or any other issue. Ad Injectors are sometimes more than just intrusive. A visitor to a website can be tricked into downloading an unwanted software and programs that could result in a major security risk, just what happened in the recent Sup...
Dozens of Chrome Extensions Hacked, Exposing Millions of Users to Data Theft

Dozens of Chrome Extensions Hacked, Exposing Millions of Users to Data Theft

Dec 29, 2025 Endpoint Protection / Browser Security
A new attack campaign has targeted known Chrome browser extensions, leading to at least 35 extensions being compromised and exposing over 2.6 million users to data exposure and credential theft. The attack targeted publishers of browser extensions on the Chrome Web Store via a phishing campaign and used their access permissions to insert malicious code into legitimate extensions in order to steal cookies and user access tokens. The first company to shed light the campaign was cybersecurity firm Cyberhaven, one of whose employees was targeted by a phishing attack on December 24, allowing the threat actors to publish a malicious version of the extension. On December 27, Cyberhaven disclosed that a threat actor compromised its browser extension and injected malicious code to communicate with an external command-and-control (C&C) server located on the domain cyberhavenext[.]pro, download additional configuration files, and exfiltrate user data. The phishing email, which purported...
Beware of New Celebrity Sex Tape (Scam) Leaked on Facebook!

Beware of New Celebrity Sex Tape (Scam) Leaked on Facebook!

Dec 12, 2016
If you came across a celebrity sex video on Facebook featuring Jessica Alba or any other celebrity, just avoid clicking it. Another Facebook scam is circulating across the social networking website that attempts to trick Facebook users into clicking on a link for a celebrity sex tape that instead downloads malware onto their computers. Once installed, the malware would force web browsers to display aggressive advertising web pages which include sites with nudity and fake lotteries. The spam campaign was uncovered by researchers at Cyren, who noted that a malicious Google Chrome extension is spreading nude celebrity PDFs through private messages and posts on various Facebook groups. If opened, the PDF file takes victims to a web page with an image containing a play button, tricking users that the PDF may contain a video. Once clicked, the link redirects users of Internet Explorer, Firefox, or Safari to a web page with overly-aggressive popups and advertisements related to ...
Google Blocks Chrome Extension Installations From 3rd-Party Sites

Google Blocks Chrome Extension Installations From 3rd-Party Sites

Jun 12, 2018
You probably have come across many websites that let you install browser extensions without ever going to the official Chrome web store. It's a great way for users to install an extension, but now Google has decided to remove the ability for websites to offer "inline installation" of Chrome extensions on all platforms. Google announced today in its Chromium blog that by the end of this year, its Chrome browser will no longer support the installation of extensions from outside the Web Store in an effort to protect its users from shady browser extensions. "We continue to receive large volumes of complaints from users about unwanted extensions causing their Chrome experience to change unexpectedly — and the majority of these complaints are attributed to confusing or deceptive uses of inline installation on websites," says ​James Wagner, Google's extensions platform product manager. Google's browser extensions crackdown will take place in three ph...
8 More Chrome Extensions Hijacked to Target 4.8 Million Users

8 More Chrome Extensions Hijacked to Target 4.8 Million Users

Aug 16, 2017
Google's Chrome web browser Extensions are under attack with a series of developers being hacked within last one month. Almost two weeks ago, we reported how unknown attackers managed to compromise the Chrome Web Store account of a developer team and hijacked Copyfish extension , and then modified it to distribute spam correspondence to users. Just two days after that incident, some unknown attackers then hijacked another popular extension ' Web Developer ' and then updated it to directly inject advertisements into the web browser of over its 1 million users. After Chris Pederick, the creator of 'Web Developer' Chrome extension that offers various web development tools to its users, reported to Proofpoint that his extension had been compromised, the security vendor analysed the issue and found further add-ons in the Chrome Store that had also been altered. According to the latest report published by the researchers at Proofpoint on Monday, the expanded ...
Malicious Chrome Extension Hijacks CryptoCurrencies and Wallets

Malicious Chrome Extension Hijacks CryptoCurrencies and Wallets

Apr 25, 2014
Although the number of malicious browser extensions has significantly increased in the past years, but recently a new extension of the Google Chrome is allegedly targeting Cryptocurrency users that is capable of stealing Bitcoins and other crypto coins silently. The malicious Chrome browser extension dubbed as ' Cryptsy Dogecoin (DOGE) Live Ticker ' which is available on Chrome Web store for free downloads and developed by " TheTrollBox " account. Reddit user noticed that the updated version of the extension has a malicious code, which is designed to hijack the crypto currency transactions. HOW CHROME EXTENSION STEALS CRYPTOCURRENCY It is very obvious that the kind of crypto related software extensions is downloaded only by the users who deal with the digital currency. So, once the user installed the malicious extension, the software within the extension starts monitoring users' web activity and looks for those users who go to Cryptocurrency exchange sites s...
Over 100 New Chrome Browser Extensions Caught Spying On Users

Over 100 New Chrome Browser Extensions Caught Spying On Users

Jun 22, 2020
Google recently removed 106 more extensions from its Chrome Web Store after they were found illegally collecting sensitive user data as part of a "massive global surveillance campaign" targeting oil and gas, finance, and healthcare sectors. Awake Security, which disclosed the findings late last week, said the malicious browser add-ons were tied back to a single internet domain registrar, GalComm. However, it's not immediately clear who is behind the spyware effort. "This campaign and the Chrome extensions involved performed operations such as taking screenshots of the victim device, loading malware, reading the clipboard, and actively harvesting tokens and user input," Awake Security said. The extensions in question posed as utilities offering capabilities to convert files from one format to the other, among other tools for secure browsing, while relying on thousands of fake reviews to trick unsuspecting users into installing them. Furthermore, the...
Google Bans Cryptocurrency Mining Extensions From Chrome Web Store

Google Bans Cryptocurrency Mining Extensions From Chrome Web Store

Apr 03, 2018
In an effort to prevent cryptojacking by extensions that maliciously mine digital currencies without users' awareness, Google has implemented a new Web Store policy that bans any Chrome extension submitted to the Web Store that mines cryptocurrency. Over the past few months, we have seen a sudden rise in malicious extensions that appear to offer useful functionality, while embedding hidden cryptocurrency mining scripts that run in the background without the user's knowledge. Last month, cryptocurrency miners were even found in a Russian nuclear weapons lab and on thousands of government websites . In January, cryptocurrency mining malware also infected more than half-million PCs . Until now, only those cryptocurrency mining extensions were allowed on the Chrome Web Store that are solely intended for mining, and explicitly informed users about its working and revenue model. If the company finds any mining extension developers submitted was not in compliance and secre...
When Good Extensions Go Bad: Takeaways from the Campaign Targeting Browser Extensions

When Good Extensions Go Bad: Takeaways from the Campaign Targeting Browser Extensions

Dec 30, 2025 Browser Security / GenAI Security
News has been making headlines over the weekend of the extensive attack campaign targeting browser extensions and injecting them with malicious code to steal user credentials. Currently, over 25 extensions, with an install base of over two million users, have been found to be compromised, and customers are now working to figure out their exposure (LayerX, one of the companies involved in protecting against malicious extensions is offering a complimentary service to audit and remediate organizations' exposure - to sign-up click here ). While this is not the first attack to target browser extensions, the scope and sophistication of this campaign are a significant step up in terms of the threats posed by browser extensions and the risks they pose to organizations. Now that details of the attack have been publicized, users and organizations need to assess their risk exposure to this attack and to browser extensions in general. This article is aimed at helping organizations understand t...
Google Chrome's New Feature Alerts Users About Auto-Removal of Malicious Extensions

Google Chrome's New Feature Alerts Users About Auto-Removal of Malicious Extensions

Aug 18, 2023 Browser Security / Malware
Google has announced plans to add a new feature in the upcoming version of its Chrome web browser to proactively alert users when an extension they have installed has been removed from the Chrome Web Store. The feature, set for release alongside Chrome 117, allows users to be notified when an add-on has been unpublished by a developer, taken down for violating Chrome Web Store policy, or marked as malware. The tech giant said it intends to highlight such extensions under a "Safety check" category in the "Privacy and security" section of the browser settings page. "When a user clicks 'Review,' they will be taken to their extensions and given the choice to either remove the extension or hide the warning if they wish to keep the extension installed," Oliver Dunk, a developer relations engineer for Chrome extensions,  said . "As in previous versions of Chrome, extensions marked as malware are automatically disabled." The development co...
Facebook profiles can be  hijacked by Chrome extensions malware

Facebook profiles can be hijacked by Chrome extensions malware

Mar 26, 2012
Facebook profiles can be hijacked by Chrome extensions malware Cybercriminals are uploading malicious Chrome browser extensions to the official Chrome Web Store and use them to hijack Facebook accounts, according to security researchers from Kaspersky Lab. The rogue extensions are advertised on Facebook by scammers and claim to allow changing the color of profile pages, tracking profile visitors or even removing social media viruses. The attacks manifest as suggestions to download Facebook apps. Those apps are, alas, not real. Instead they are malware and, in one case, a malware-laden Chrome extension hosted in Google's very own Chrome Web Store. To do that, they must follow a series of steps, which include installing a fake Adobe Flash Player Chrome extension. The launchpad for the fake Flash Player is a Facebook app called " Aprenda ". If Aprenda is installed it redirects users to Chrome Web Store, encouraging them to install the fake Flash extension. " This last o...
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