JavaScript | Breaking Cybersecurity News | The Hacker News

Cybersecurity researchers have flagged a malicious npm package that was generated using artificial intelligence (AI) and concealed a cryptocurrency wallet drainer. The package, @kodane/patch-manager, claims to offer "advanced license validation and registry optimization utilities for high-performance Node.js applications." It was uploaded to npm by a user named "Kodane" on July 28, 2025. The package is no longer available for download from the registry, but not before it attracted over 1,500 downloads. Software supply chain security company Safety, which discovered the library, said the malicious features are advertised directly in the source code, calling it an "enhanced stealth wallet drainer." Specifically, the behavior is triggered as part of a postinstall script that drops its payload within hidden directories across Windows, Linux, and macOS systems, and then proceeds to connect to a command-and-control (C2) server at "sweeper-monitor-produ...

Cybersecurity researchers are calling attention to an ongoing campaign that distributes fake cryptocurrency trading apps to deploy a compiled V8 JavaScript (JSC) malware called JSCEAL that can capture data such as credentials and wallets. The activity leverages thousands of malicious advertisements posted on Facebook in an attempt to redirect unsuspecting victims to counterfeit sites that instruct them to install the bogus apps, according to Check Point. These ads are shared either via stolen accounts or newly created ones. "The actors separate the installer's functionality into different components and most notably move some functionality to the JavaScript files inside the infected websites," the company said in an analysis. "A modular, multi-layered infection flow enables the attackers to adapt new tactics and payloads at every stage of the operation." It's worth noting that some aspects of the activity were previously documented by Microsoft in April 2...

The maintainers of the Python Package Index (PyPI) repository have issued a warning about an ongoing phishing attack that's targeting users in an attempt to redirect them to fake PyPI sites. The attack involves sending email messages bearing the subject line "[PyPI] Email verification" that are sent from the email address noreply@pypj[.]org (note that the domain is not " pypi[.]org "). "This is not a security breach of PyPI itself, but rather a phishing attempt that exploits the trust users have in PyPI," Mike Fiedler, PyPI Admin, said in a post Monday. The email messages instruct users to follow a link to verify their email address, which leads to a replica phishing site that impersonates PyPI and is designed to harvest their credentials. But in a clever twist, once the login information is entered on the bogus site, the request is routed to the legitimate PyPI site, effectively fooling the victims into thinking that nothing is amiss when, in r...

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React conquered XSS? Think again. That's the reality facing JavaScript developers in 2025, where attackers have quietly evolved their injection techniques to exploit everything from prototype pollution to AI-generated code, bypassing the very frameworks designed to keep applications secure. Full 47-page guide with framework-specific defenses (PDF, free). JavaScript conquered the web, but with that victory came new battlefields. While developers embraced React, Vue, and Angular, attackers evolved their tactics, exploiting AI prompt injection, supply chain compromises, and prototype pollution in ways traditional security measures can't catch. A Wake-up Call: The Polyfill.io Attack In June 2024, a single JavaScript injection attack compromised over 100,000 websites in the biggest JavaScript injection attack of the year. The Polyfill.io supply chain attack , where a Chinese company acquired a trusted JavaScript library and weaponized it to inject malicious code, affected major pl...

Google has announced the launch of a new initiative called OSS Rebuild to bolster the security of the open-source package ecosystems and prevent software supply chain attacks. "As supply chain attacks continue to target widely-used dependencies, OSS Rebuild gives security teams powerful data to avoid compromise without burden on upstream maintainers," Matthew Suozzo, Google Open Source Security Team (GOSST), said in a blog post this week. The project aims to provide build provenance for packages across the Python Package Index (Python), npm (JS/TS), and Crates.io (Rust) package registries, with plans to extend it to other open-source software development platforms. With OSS Rebuild, the idea is to leverage a combination of declarative build definitions, build instrumentation, and network monitoring capabilities to produce trustworthy security metadata, which can then be used to validate the package's origin and ensure it has not been tampered with. "Through a...

A new attack campaign has compromised more than 3,500 websites worldwide with JavaScript cryptocurrency miners, marking the return of browser-based cryptojacking attacks once popularized by the likes of CoinHive .  Although the service has since shuttered after browser makers took steps to ban miner-related apps and add-ons, researchers from the c/side said they found evidence of a stealthy miner packed within obfuscated JavaScript that assesses the computational power of a device and spawns background Web Workers to execute mining tasks in parallel without raising any alarm. More importantly, the activity has been found to leverage WebSockets to fetch mining tasks from an external server, so as to dynamically adjust the mining intensity based on the device capabilities and accordingly throttle resource consumption to maintain stealth. "This was a stealth miner, designed to avoid detection by staying below the radar of both users and security tools," security researcher ...

Cybersecurity researchers have alerted to a supply chain attack that has targeted popular npm packages via a phishing campaign designed to steal the project maintainers' npm tokens. The captured tokens were then used to publish malicious versions of the packages directly to the registry without any source code commits or pull requests on their respective GitHub repositories. The list of affected packages and their rogue versions, according to Socket, is listed below - eslint-config-prettier (versions 8.10.1, 9.1.1, 10.1.6, and 10.1.7) eslint-plugin-prettier (versions 4.2.2 and 4.2.3) synckit (version 0.11.9) @pkgr/core (version 0.2.8) napi-postinstall (version 0.3.1) got-fetch (versions 5.1.11 and 5.1.12) is (versions 3.3.1 and 5.0.0) "The injected code attempted to execute a DLL on Windows machines, potentially allowing remote code execution," the software supply chain security firm said. The development comes in the aftermath of a phishing campaign that...

The North Korean threat actors linked to the Contagious Interview campaign have been observed publishing another set of 67 malicious packages to the npm registry, underscoring ongoing attempts to poison the open-source ecosystem via software supply chain attacks. The packages, per Socket, have attracted more than 17,000 downloads, and incorporate a previously undocumented version of a malware loader codenamed XORIndex . The activity is an expansion of an attack wave spotted last month that involved the distribution of 35 npm packages that deployed another loader referred to as HexEval. "The Contagious Interview operation continues to follow a whack-a-mole dynamic, where defenders detect and report malicious packages, and North Korean threat actors quickly respond by uploading new variants using the same, similar, or slightly evolved playbooks," Socket researcher Kirill Boychenko said . Contagious Interview is the name assigned to a long-running campaign that seeks to en...

Google has released security updates to address a vulnerability in its Chrome browser for which an exploit exists in the wild. The zero-day vulnerability, tracked as CVE-2025-6554 (CVSS score: 8.1), has been described as a type confusion flaw in the V8 JavaScript and WebAssembly engine. "Type confusion in V8 in Google Chrome prior to 138.0.7204.96 allowed a remote attacker to perform arbitrary read/write via a crafted HTML page," according to a description of the bug on the NIST's National Vulnerability Database (NVD). Type confusion vulnerabilities can have severe consequences as they can be exploited to trigger unexpected software behavior, resulting in the execution of arbitrary code and program crashes. Zero-day bugs like this are especially risky because attackers often start using them before a fix is available. In real-world attacks, these flaws can let hackers install spyware, launch drive-by downloads, or quietly run harmful code — sometimes just by getting...

Cybersecurity researchers have uncovered a fresh batch of malicious npm packages linked to the ongoing Contagious Interview operation originating from North Korea. According to Socket , the ongoing supply chain attack involves 35 malicious packages that were uploaded from 24 npm accounts. These packages have been collectively downloaded over 4,000 times. The complete list of the JavaScript libraries is below - react-plaid-sdk sumsub-node-websdk vite-plugin-next-refresh vite-plugin-purify nextjs-insight vite-plugin-svgn node-loggers react-logs reactbootstraps framer-motion-ext serverlog-dispatch mongo-errorlog next-log-patcher vite-plugin-tools pixel-percent test-topdev-logger-v1 test-topdev-logger-v3 server-log-engine logbin-nodejs vite-loader-svg struct-logger flexible-loggers beautiful-plugins chalk-config jsonpacks jsonspecific jsonsecs util-buffers blur-plugins proc-watch node-orm-mongoose prior-config use-videos lucide-node, and router-parse ...

Cybersecurity researchers from  SafeDep and Veracode detailed a number of malware-laced npm packages that are designed to execute remote code and download additional payloads. The packages in question are listed below - eslint-config-airbnb-compat (676 Downloads) ts-runtime-compat-check (1,588 Downloads) solders (983 Downloads) @mediawave/lib (386 Downloads) All the identified npm packages have since been taken down from npm, but not before they were downloaded hundreds of times from the package registry.  SafeDep's analysis of eslint-config-airbnb-compat found that the JavaScript library has ts-runtime-compat-check listed as a dependency, which, in turn, contacts an external server defined in the former package ("proxy.eslint-proxy[.]site") to retrieve and execute a Base64-encoded string. The exact nature of the payload is unknown. "It implements a multi-stage remote code execution attack using a transitive dependency to hide the malicious code,"...

Cybersecurity researchers are calling attention to a "large-scale campaign" that has been observed compromising legitimate websites with malicious JavaScript injections. According to Palo Alto Networks Unit 42, these malicious injects are obfuscated using JSFuck , which refers to an "esoteric and educational programming style" that uses only a limited set of characters to write and execute JavaScript code. The cybersecurity company has given the technique an alternate name JSFireTruck owing to the profanity involved. "Multiple websites have been identified with injected malicious JavaScript that uses JSFireTruck obfuscation, which is composed primarily of the symbols [, ], +, $, {, and }," security researchers Hardik Shah, Brad Duncan, and Pranay Kumar Chhaparwal said . "The code's obfuscation hides its true purpose, hindering analysis." Further analysis has determined that the injected code is designed to check the website referrer (...

The financially motivated threat actor known as FIN6 has been observed leveraging fake resumes hosted on Amazon Web Services (AWS) infrastructure to deliver a malware family called More_eggs. "By posing as job seekers and initiating conversations through platforms like LinkedIn and Indeed, the group builds rapport with recruiters before delivering phishing messages that lead to malware," the DomainTools Investigations (DTI) team said in a report shared with The Hacker News. More_eggs is the work of another cybercrime group called Golden Chickens (aka Venom Spider), which was most recently attributed to new malware families like TerraStealerV2 and TerraLogger. A JavaScript-based backdoor, it's capable of enabling credential theft, system access, and follow-on attacks, including ransomware. One of the malware's known customers is FIN6 (aka Camouflage Tempest, Gold Franklin, ITG08, Skeleton Spider, and TA4557), an e-crime crew that originally targeted point-of-s...

Google has stepped in to address a security flaw that could have made it possible to brute-force an account's recovery phone number, potentially exposing them to privacy and security risks. The issue, according to Singaporean security researcher "brutecat," leverages an issue in the company's account recovery feature. That said, exploiting the vulnerability hinges on several moving parts, specifically targeting a now-deprecated JavaScript-disabled version of the Google username recovery form ("accounts.google[.]com/signin/usernamerecovery") that lacked anti-abuse protections designed to prevent spammy requests. The page in question is designed to help users check if a recovery email or phone number is associated with a specific display name (e.g., "John Smith"). But circumventing the CAPTCHA-based rate limit ultimately made it possible to try out all permutations of a Google account's phone number in a short space of time and arrive at t...

Google on Monday released out-of-band fixes to address three security issues in its Chrome browser, including one that it said has come under active exploitation in the wild. The high-severity flaw is being tracked as CVE-2025-5419 (CVSS score: 8.8), and has been flagged as an out-of-bounds read and write vulnerability in the V8 JavaScript and WebAssembly engine. "Out-of-bounds read and write in V8 in Google Chrome prior to 137.0.7151.68 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page," reads the description of the bug on the NIST's National Vulnerability Database (NVD). Google credited Clement Lecigne and Benoît Sevens of Google Threat Analysis Group (TAG) with discovering and reporting the flaw on May 27, 2025. It also noted that the issue was addressed the next day by pushing out a configuration change to the Stable version of the browser across all platforms. As is customary, the advisory is light on details regarding t...

A new malware campaign is distributing a novel Rust-based information stealer dubbed EDDIESTEALER using the popular ClickFix social engineering tactic initiated via fake CAPTCHA verification pages. "This campaign leverages deceptive CAPTCHA verification pages that trick users into executing a malicious PowerShell script, which ultimately deploys the infostealer, harvesting sensitive data such as credentials, browser information, and cryptocurrency wallet details," Elastic Security Labs researcher Jia Yu Chan said in an analysis. The attack chains begin with threat actors compromising legitimate websites with malicious JavaScript payloads that serve bogus CAPTCHA check pages, which prompt site visitors to "prove you are not [a] robot" by following a three-step process, a prevalent tactic called ClickFix . This involves instructing the potential victim to open the Windows Run dialog prompt, paste an already copied command into the "verification window"...

The U.S. Department of Treasury's Office of Foreign Assets Control (OFAC) has levied sanctions against a Philippines-based company named Funnull Technology Inc. and its administrator Liu Lizhi for providing infrastructure to conduct romance baiting scams that led to massive cryptocurrency losses. The Treasury accused the Taguig-headquartered company of enabling thousands of websites involved in virtual currency investment scams that caused Americans to lose billions of dollars annually. "Funnull has directly facilitated several of these schemes, resulting in over $200 million in U.S. victim-reported losses," the agency said in a press release. The average loss is estimated to be over $150,000 per individual. Funnull, also called Fang Neng CDN (funnull[.]io, funnull[.]com, funnull[.]app, and funnull[.]buzz), first attracted the attention of the cybersecurity community in June 2024 after it was implicated in the supply chain attack of the widely-used Polyfill[.]io J...