Web browsers process untrusted web content, making flaws, malicious extensions, and stolen session data important cybersecurity concerns.
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Background for this topic.
A web browser is software that retrieves and displays websites and web applications, while executing code such as JavaScript and storing data including cookies, credentials, and browsing history. Its security boundary includes the browser interface, rendering engine, networking components, extensions, and connections to operating-system resources.
Browsers are exposed to malicious or compromised websites, phishing pages, drive-by exploitation of browser vulnerabilities, and abusive extensions. A successful exploit may escape browser isolation or access site data, while stolen cookies can enable account use without the password. Important defenses include prompt browser and extension updates, sandboxing and site isolation, phishing protection, carefully controlled permissions, and HTTPS (which protects data in transit but does not make a site trustworthy). Organizations may also manage versions, extensions, and configuration centrally, and use browser telemetry during vulnerability management or investigations.
Weekly headline count for the current query.
The North Korean threat actors linked to the Contagious Interview campaign have been observed publishing 108 unique packages and web browser extensions spanning npm, Packagist, Go, and Google Chrome as part of an ongoing activity referred to as PolinRider
Apple on Monday released security updates for iOS, macOS, and the Safari web browser to address over three dozen flaws, including four vulnerabilities in WebKit that were discovered using artificial intelligence (AI) tools like Anthropic Claude and OpenAI Codex Security
Google has made Device Bound Session Credentials (DBSC) generally available to all Windows users of its Chrome web browser, months after it began testing the security feature in open beta
Google on Thursday released security updates for its Chrome web browser to address 21 vulnerabilities, including a zero-day flaw that it said has been exploited in the wild
Google on Thursday released security updates for its Chrome web browser to address two high-severity vulnerabilities that it said have been exploited in the wild
Anthropic on Friday said it discovered 22 new security vulnerabilities in the Firefox web browser as part of a security partnership with Mozilla
Cybersecurity researchers have disclosed details of an ongoing campaign dubbed KongTuke that used a malicious Google Chrome extension masquerading as an ad blocker to deliberately crash the web browser and trick victims into running arbitrary commands using ClickFix-like lures to deliver a previously undocumented remote access trojan (RAT) dubbed ModeloRAT
Cybersecurity researchers have discovered five new malicious Google Chrome web browser extensions that masquerade as human resources (HR) and enterprise resource planning (ERP) platforms like Workday, NetSuite, and SuccessFactors to take control of victim accounts
Apple on Friday released security updates for iOS, iPadOS, macOS, tvOS, watchOS, visionOS, and its Safari web browser to address two security flaws that it said have been exploited in the wild, one of which is the same flaw that was patched by Google in Chrome earlier this week
Google on Monday announced a set of new security features in Chrome, following the company's addition of agentic artificial intelligence (AI) capabilities to the web browser
Google's artificial intelligence (AI)-powered cybersecurity agent called Big Sleep has been credited by Apple for discovering as many as five different security flaws in the WebKit component used in its Safari web browser that, if successfully exploited, could result in a browser crash or memory corruption
Cybersecurity researchers have discovered a new vulnerability in OpenAI's ChatGPT Atlas web browser that could allow malicious actors to inject nefarious instructions into the artificial intelligence (AI)-powered assistant's memory and run arbitrary code
The newly released OpenAI Atlas web browser has been found to be susceptible to a prompt injection attack where its omnibox can be jailbroken by disguising a malicious prompt as a seemingly harmless URL to visit
ClickFix, FileFix, fake CAPTCHA — whatever you call it, attacks where users interact with malicious scripts in their web browser are a fast-growing source of security breaches. ClickFix attacks prompt the user to solve some kind of problem or challenge in the browser — most commonly a CAPTCHA, but also things like fixing an error on a webpage. The name is a little misleading, though
The threat actor behind Rhadamanthys has also advertised two other tools called Elysium Proxy Bot and Crypt Service on their website, even as the flagship information stealer has been updated to support the ability to collect device and web browser fingerprints, among others
Google on Wednesday released security updates for the Chrome web browser to address four vulnerabilities, including one that it said has been exploited in the wild
Attacks that target users in their web browsers have seen an unprecedented rise in recent years. In this article, we’ll explore what a “browser-based attack” is, and why they’re proving to be so effective. What is a browser-based attack? First, it’s important to establish what a browser-based attack is
Apple on Tuesday released security updates for its entire software portfolio, including a fix for a vulnerability that Google said was exploited as a zero-day in the Chrome web browser earlier this month
Google on Tuesday rolled out fixes for six security issues in its Chrome web browser, including one that it said has been exploited in the wild
Google on Wednesday released updates to address four security issues in its Chrome web browser, including one for which it said there exists an exploit in the wild