Latest Cybersecurity News and Articles

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U.S. Government Entity Paid Kairos $1 Million in Data-Theft Extortion Case

A U.S. government entity paid about $1 million to keep stolen files from being leaked, according to a new case study by Rakesh Krishnan for Ransom-ISAC, built on a leaked negotiation chat and the blockchain trail the payment left. The odd part: the group that took the money calls itself Kairos, but it may not be a ransomware gang at all. Krishnan found no sign that it ever locked a single

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North Korean Hackers Publish 108 Malicious Packages and Extensions in PolinRider Campaign

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. "The campaign remains active, and new malicious packages are likely to continue appearing as threat actors compromise maintainer accounts,

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Unpatched Flaws Disclosed in Filesystem Bundled Into Millions of Embedded Devices

Security firm runZero has disclosed seven vulnerabilities in FatFs, a small filesystem library that lets a device read and write the FAT and exFAT formats used on USB drives and SD cards. The flaws matter because FatFs is nearly everywhere. It ships inside the firmware that runs security cameras, drones, industrial controllers, hardware crypto wallets, and other devices built on

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New "Bad Epoll" Linux Kernel Flaw Lets Unprivileged Users Gain Root, Hits Android

A newly disclosed Linux kernel flaw called Bad Epoll (CVE-2026-46242) lets an ordinary user with no special access take full control of a machine as root. It affects Linux desktops, servers, and Android, and a fix is out. Bad Epoll sits in the same small stretch of kernel code where Anthropic's most powerful AI model, Mythos, recently found a different bug. The AI caught one flaw and missed

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New Avalon Malware Framework Packs CrownX Ransomware Capabilities

Cybersecurity researchers have discovered a previously undocumented modular malware framework codenamed Avalon that's distributed by means of a multi-stage phishing chain capable of bypassing traditional security controls. Avalon combines credential collection, lateral movement, remote access, recovery disruption, and ransomware execution, bringing together diverse functions under one

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North Korea-Linked npm Packages Mimic Rollup Polyfills to Steal Developer Secrets

Threat actors with ties to North Korea have been linked to a fresh set of malicious npm packages that masquerade as Rollup polyfill tooling to facilitate remote access and data theft. According to JFrog, the packages "rollup-packages-polyfill-core" and "rollup-runtime-polyfill-core" mimic the legitimate "rollup-plugin-polyfill-node" project, down to the description, repository metadata, and

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In Other News: Canadian Hacker Jailed, Open Source Zero-Days, Two Sentenced for ATM Jackpotting

Noteworthy stories that might have slipped under the radar: Anonymous-linked Canadian hacker jailed, researcher drops zero-days in open source projects, Venezuelans sentenced in the US over ATM jackpotting. The post In Other News: Canadian Hacker Jailed, Open Source Zero-Days, Two Sentenced for ATM Jackpotting appeared first on SecurityWeek.

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Armored Likho Targets Government Agencies, Power Sector with BusySnake Stealer

A previously undocumented threat actor known as Armored Likho has been attributed to cyber attacks targeting government agencies and the electric power sector across Russia, Brazil, and Kazakhstan. "Armored Likho blends financially motivated campaigns targeting private individuals with targeted cyber espionage aimed at organizations," Kaspersky said in a technical analysis published today. "

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European Parliament Member Investigating Spyware Was Hacked With Pegasus

A new report from the Citizen Lab has revealed that former Member of the European Parliament Stelios Kouloglou had his mobile device repeatedly hacked with the notorious Pegasus spyware while serving on a committee that was tasked with investigating the abuse of such commercial surveillance tools in the bloc. "Through forensic analysis of his device, we found that the attackers could have had

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Agentic AI Used to Conduct Ransomware Attack via Langflow

Attack demonstrates how LLM agents can combine known exploitation techniques with real-time reasoning to automate complex, multi-stage intrusions. The post Agentic AI Used to Conduct Ransomware Attack via Langflow appeared first on SecurityWeek.

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Medtronic Data Breach Impacts 3.8 Million People

In April, ShinyHunters accessed the company’s corporate IT systems and stole patients’ personal and medical information. The post Medtronic Data Breach Impacts 3.8 Million People appeared first on SecurityWeek.

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Alleged Scattered Spider Hacker Extradited to US

Prosecutors say 19-year-old Peter Stokes was a member of Scattered Spider, the hacking group linked to more than 100 network intrusions and over $100 million in ransom payments. The post Alleged Scattered Spider Hacker Extradited to US appeared first on SecurityWeek.

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Google, FBI Disrupt NetNut Residential Proxy Network Powered by Millions of Devices

NetNut rented access to millions of compromised devices, allowing cybercriminals and nation-state actors to mask their identities during attacks. The post Google, FBI Disrupt NetNut Residential Proxy Network Powered by Millions of Devices appeared first on SecurityWeek.

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PamStealer Uses Fake Maccy Sites and PAM Checks to Steal Mac Login Passwords

Cybersecurity researchers have flagged a new macOS information stealer called PamStealer that employs a series of clever tricks to infect systems and siphon sensitive data. The stealer, discovered by Jamf Threat Labs, is distributed as a compiled AppleScript (.scpt) file impersonating Maccy, a legitimate open-source clipboard manager. It has been codenamed PamStealer owing to its ability to

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Critical Cursor AI Code Editor Flaws Could Lead to OS-Level Remote Code Execution

The DuneSlide vulnerabilities enable zero-click prompt injection attacks that escape Cursor's sandbox and execute arbitrary code on the underlying operating system. The post Critical Cursor AI Code Editor Flaws Could Lead to OS-Level Remote Code Execution appeared first on SecurityWeek.

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FBI Seizes NetNut Proxy Platform, Popa Botnet

The Federal Bureau of Investigation (FBI) said today it worked with industry partners to seize hundreds of domains associated with NetNut, a sprawling residential proxy service operated by the publicly-traded Israeli company Alarum Technologies [NASDAQ: ALAR]. The action comes roughly two weeks after KrebsOnSecurity published findings from multiple security firms connecting NetNut to the Popa botnet, a collection of at least two million devices that have been compromised by malicious software with little or no consent from victims.

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Google Disrupts NetNut Residential Proxy Network Spanning 2 Million Home Devices

Google has significantly degraded NetNut, one of the biggest networks that turns home devices into rented relays for other people's traffic. Working with the FBI, Lumen, and others, Google's Threat Intelligence Group (GTIG) said this week it had reduced the network's pool of usable devices by millions. Google identifies NetNut, also tracked as Popa, as a network spread across home

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Ransomware Groups Turn to Citrix Bleed 2, BYOVD, and Supply Chain Credentials

Threat actors associated with the Anubis ransomware operation have been observed exploiting the Citrix Bleed 2 (CVE-2025-5777) vulnerability to obtain initial access. "Although tactics differ between affiliates, common patterns emerged in tradecraft through use of legitimate Remote Management and Monitoring (RMM) tooling, credential access, and hands-on-keyboard procedures used for lateral

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ThreatsDay: AI Compute Hijacking, Apple Email Flaw, BlueHammer Ransomware + 14 Stories

This week’s security news is mostly about weak spots. Browsers, bots, sandboxes, AI systems, and email flows all show the same problem in different ways. Everything looks normal until someone tests a small gap and finds a way through. This is not one big break. It is small permissions, weak checks, open systems, and normal tools doing things they were allowed to do. That same pattern runs

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New CitrixBleed Vulnerability Exploited Immediately After Public Disclosure

Hackers are targeting NetScaler appliances using public PoC code to retrieve arbitrary memory content in the HTTP response. The post New CitrixBleed Vulnerability Exploited Immediately After Public Disclosure appeared first on SecurityWeek.