Latest Cybersecurity News and Articles

---

A Malicious SIM Card Can Run Attacker Code Inside the Modems Behind Cellular IoT Devices

A malicious SIM card can order the device it sits in to run commands of the attacker's choosing. On the cellular modules built into electric-vehicle chargers, industrial routers, and car telematics units, that is enough to take the whole device over. Researchers at the University of Birmingham and the security firm Fuzzware tested 26 phones and cellular modules for the capability, found it

---

Mozilla Revokes Firefox and Thunderbird Linux Signing Key After Key Lands in Private Repo

Mozilla has scrapped the cryptographic key behind Firefox and Thunderbird downloads for Linux after an unencrypted copy of it was committed by mistake to one of the company's own private code repositories. That key is how a user, or a Linux distribution packaging the browser, confirms a downloaded Firefox tarball came from Mozilla and was not tampered with. That decision carries a cost for

---

Corma Raises $60 Million for Defensive Cybersecurity AI Model

Corma emerged from stealth with seed funding from Sequoia Capital, Khosla Ventures, and Coatue. The post Corma Raises $60 Million for Defensive Cybersecurity AI Model appeared first on SecurityWeek.

---

Researchers Built a Fake Crypto Startup and Hired Three Suspected North Korean IT Workers

Security researchers invented a cryptocurrency startup, advertised developer jobs, and hired three people they believe were North Korean operatives. Every virtual machine the company issued was recording. The onboarding paperwork is the part hiring teams can use. The first hire claimed to live in Pasadena, Texas, then sent a California driver's license and a New York bank account. The

---

Extension Banned for Stealing AI Chats Returns to Chrome Store, Resumes Malicious Activities

The extension amassed over 300,000 installs and a 4.6 rating before Google removed it for stealing data. The post Extension Banned for Stealing AI Chats Returns to Chrome Store, Resumes Malicious Activities appeared first on SecurityWeek.

---

Researchers Turn USB Auto-Install Into a Full SYSTEM Takeover on Windows 11

Windows Plug and Play can be abused to fetch signed vendor software for an emulated USB device and execute privileged installation components that researchers chained to SYSTEM access on a fully updated Windows 11 machine. The same PnP path can be triggered over Remote Desktop without physical hardware when supported Plug and Play or low-level USB redirection is enabled; Microsoft says that

---

Malicious MCP Servers Can Split Instructions to Make AI Coding Agents Exfiltrate Secrets

A malicious tool server connected to an AI coding assistant can quietly walk off with SSH keys, environment secrets, source code, and customer data without ever sending one obviously harmful instruction. The trick can work even after a blunt version of the same theft is refused: split the request into fragments that each look routine, place them in channels the assistant already uses, and let

---

Hacker Conversations: Marcus Hutchins and the Journey From the Gray Zone to Redemption

Marcus Hutchins doesn’t personally consider himself a hacker – but he accepts the epithet because it’s a widely used term for what he once did. The post Hacker Conversations: Marcus Hutchins and the Journey From the Gray Zone to Redemption appeared first on SecurityWeek.

---

OpenAI Unveils New Cybersecurity Model GPT-5.6-Cyber

OpenAI has also announced the expansion of its Daybreak platform to give more organizations access to its AI. The post OpenAI Unveils New Cybersecurity Model GPT-5.6-Cyber appeared first on SecurityWeek.

---

Gunra Ransomware Exploits Fortinet and Schneider Electric Flaws to Breach Networks

Cybersecurity and intelligence agencies from South Korea and the U.S. warned of Gunra ransomware attacks targeting critical infrastructure sectors and organizations across the world. Targets of these attacks include healthcare and public health, financial services, government services and facilities, and professional and nonprofit services. "Gunra is another variant in the ongoing trend of

---

Hackers Breach Polish Power Plant Controls via Private Cellular Network and Shut Turbine

Attackers shut down a steam turbine and the process-water treatment system at a Polish combined heat and power plant by coming in over the private cellular network the local grid operator uses to reach remote equipment. The plant supplies heat to roughly 50,000 residents. Recovery began at about 7:30 a.m. while the intruders were still active inside the network, and customers lost neither heat

---

Mozilla Issues New Firefox GPG Key Following Exposure

The previous GPG signing subkey was inadvertently added to a GitHub repository and Mozilla decided to revoke it. The post Mozilla Issues New Firefox GPG Key Following Exposure appeared first on SecurityWeek.

---

BdThemes Supply Chain Attack Poisons JSON to Create Rogue WordPress Admins

Cybersecurity researchers have warned of a supply chain compromise impacting WordPress plugin vendor BdThemes, prompting the content management systems (CMS) platform's plugins team to temporarily disable their downloads. "Unlike traditional software supply chain attacks, zero source code files were modified within the official WordPress.org repository," Wordfence researcher Paolo Tresso said.

---

China-Linked Hackers Deploy New StormEncryptor Ransomware, Likely via N-central Flaw

Microsoft has disclosed that Storm-1175, a financially motivated threat actor linked to China, has deployed a previously undocumented ransomware strain called StormEncryptor. The use of StormEncryptor marks a shift from the adversary's previous use of Medusa ransomware, the Microsoft Threat Intelligence Team said. "StormEncryptor is written in C++ and appends the file name extension .encrypted

---

⚡ Weekly Recap: AI Goes Rogue, Metabase 0-Day, MCP Supply-Chain Attacks, and Router Backdoors

A lot of security problems still begin with someone doing a completely normal thing. Cloning a repo. Answering a call. Leaving a box exposed. Trusting the default. That pretty much covers the mood this week. Old bugs are back, supply chains are getting stranger, and some exploit paths are so short you wonder what was supposed to stop them in the first place. That’s only part of it. Here’s

---

OpenAI’s Upcoming Astra Model Raises Autonomous Cyberattack Concerns

The current GPT-5.6-Sol has been assigned a ‘high’ cybersecurity threshold, but Astra could reach the maximum ‘critical’ threshold.  The post OpenAI’s Upcoming Astra Model Raises Autonomous Cyberattack Concerns appeared first on SecurityWeek.

---

Stealthium Targets Security Blind Spots in AI Accelerators and Neo-Clouds

The startup analyzes subtle telemetry signals to detect attacks that traditional security tools cannot see inside accelerator-powered AI infrastructure. The post Stealthium Targets Security Blind Spots in AI Accelerators and Neo-Clouds appeared first on SecurityWeek.

---

Cisco Warns of High-Severity ClamAV Vulnerabilities With Public PoC

Remote, unauthenticated attackers could exploit the bugs to cause a denial-of-service (DoS) condition. The post Cisco Warns of High-Severity ClamAV Vulnerabilities With Public PoC appeared first on SecurityWeek.

---

Kimsuky Builds Offline AI Stack to Boost Phishing and Automate Malware Development

North Korea's state hackers are no longer content to type prompts into public chatbots. One of the country's main espionage groups has begun running artificial intelligence (AI) offline on its own servers, connecting document-search tools to files in its possession, and collecting the software parts needed to build AI into its malware. South Korean security firm Genians says it uncovered the

---

‘Ghostjacking’ Attack Uses Poisoned Logs to Turn AI Agents Bad

An AI agent executes instructions that an attacker has planted in the log or alert that records a blocked request word for word. The post ‘Ghostjacking’ Attack Uses Poisoned Logs to Turn AI Agents Bad appeared first on SecurityWeek.