The Iranian state-backed hacking group tracked as Nimbus Manticore (aka GalaxyGato, Mirage Kitten, Smoke Sandstorm, Subtle Snail, and UNC1549) has been attributed to a fresh set of attacks targeting entities across the Middle East, Africa, and South Asia. The intrusions involve the use of a previously undocumented Windows backdoor called NightLedger and two custom WebSocket tunnelers,

The company claims MAI-Cyber-1-Flash tops Anthropic’s Mythos and OpenAI’s GPT-5.6 Sol in CyberGym testing. The post Microsoft Unveils MAI-Cyber-1-Flash, Its First Cybersecurity AI Model  appeared first on SecurityWeek.

Tal Kollander’s history divides neatly into two halves: first as an active hacker and then as the block that stops hacks. The post Hacker Conversations: Tal Kollander’s Journey From Black Hat to Hack Blocker appeared first on SecurityWeek.

Act Security tackles the spiraling patch problem caused by AI’s ability to find new vulnerabilities in existing cloud environments. The post Act Security Emerges from Stealth to Fight the Patch Problem appeared first on SecurityWeek.

The startup will invest in expanding engineering and sales teams, accelerating ecosystem support, and expanding corporate partnerships. The post Hush Security Raises $30 Million for AI Agent Governance appeared first on SecurityWeek.

Healthcare billing company Medical Computer Business Services (MCBS) has disclosed that a 2025 network breach exposed the sensitive information of more than 1.2 million people. [...]

The new two-word naming convention uses a memorable term utilized in public reporting and a cluster-categorization word. The post Google Adopts New Threat Actor Naming System appeared first on SecurityWeek.

JetBrains is urging customers of on-premise versions of TeamCity to update to the latest version following the discovery of a critical security issue that could result in arbitrary code execution. The vulnerability, assigned CVE-2026-63077 (CVSS score: 9.8), affects all TeamCity On-Premises versions. It has been addressed in versions 2025.11.7 and 2026.1.3. TeamCity Cloud instances have already

STAR Labs has published a Linux kernel exploit that turns an ordinary local user into root on the CentOS Stream 9 build it targeted. The flaw, tracked as CVE-2026-53264 (CVSS score: 7.8), is a use-after-free race in the kernel's network traffic-control subsystem.Researcher Lee Jia Jie said artificial intelligence (AI) helped him find the bug and speed up exploit development. This is local

The critical remote code execution bug can be exploited without authentication, under the library’s stock default configurations. The post Unpatched Fastjson Vulnerability Exploited in Attacks appeared first on SecurityWeek.

Impacting on-premises deployments, the OS command injection allows attackers to access privileged internal functionality. The post Critical Arista VeloCloud Orchestrator Vulnerability Exploited as Zero-Day appeared first on SecurityWeek.

Microsoft has launched its first cybersecurity-specific model inside MDASH, its multi-model vulnerability identification and remediation harness. The company says MDASH, using MAI-Cyber-1-Flash and GPT-5.4, scored 95.95% on CyberGym. It also claims the configuration costs 50% less than its current best MDASH combination of GPT-5.4, GPT-5.4 mini, and GPT-5.3 Codex. Access is limited to approved

The hacker claimed to have stolen the information of 2 million Origin Energy customers after breaching its systems. The post Origin Energy Data Breach Affects 900,000 Australians appeared first on SecurityWeek.

A maximum-severity security flaw impacting on-premises versions of Arista VeloCloud Orchestrator (VCO) has come under active exploitation in the wild. The vulnerability, tracked as CVE-2026-16812 (CVSS score: 10.0), is a case of operating system command injection that could pave the way for arbitrary code execution. "VeloCloud Orchestrator (VCO) on-prem has a security issue where this issue

Decades after it appeared in “The Terminator,” Skynet looks more like a forecast of the cyber incident in which a rogue AI system hacked into another AI company on its own. The post For Some, So-Called ‘Skynet Day’ Came too Close to Sci-Fi After a Rogue Agent Hacked Into a Startup appeared first on SecurityWeek.

Attackers used Hermes, an autonomous open source tool, in unrestricted "YOLO mode" to conduct espionage against Thailand's Ministry of Finance.

Hackers are actively exploiting a vulnerability in the FastJson open-source Java library, allowing remote code execution without user interaction or elevated privileges. [...]

Arista has patched a maximum-severity command injection vulnerability in on-premises VeloCloud Orchestrator deployments that is being actively exploited in attacks. [...]

PleaseFix class of flaws makes it easy to socially engineer agentic browsers and highlights weaknesses in how they handle cross-origin requests.

A botnet called Dysphoria has compromised around 200,000 devices across the world and is using them for distributed denial of service (DDoS) attacks and traffic relay operations. [...]

A proof-of-concept exploit for "Certighost," a Windows Active Directory Certificate Services vulnerability, has been released that can allow authenticated attackers to potentially compromise a Windows domain. [...]

This category of vulnerabilities allows an attacker to easily acquire administrative level permissions and bypass cloud providers' access controls.

An FBI agent explains how the mulitnational law-enforcement Operation Cronos was successful in disrupting the largest ransomware group of its time.

As attackers shift from password theft to session and token theft to bypass multifactor authentication controls, organizations must move beyond login security and protect authenticated sessions.

NVIDIA and 36 other organizations have formed the Open Secure AI Alliance to develop and share open technologies, techniques, and tools for securing software and artificial intelligence (AI) agents. The 37-member group spans cloud, security, enterprise software, and AI companies, including Microsoft, Cisco, Cloudflare, CrowdStrike, Hugging Face, IBM, Palo Alto Networks, Red Hat, and the Linux

Confidence in autonomous security tools is declining, and here's why.

Apple is being sued by three people who claim approximately $1.8 million in Bitcoin was stolen after downloading and using a fraudulent Sparrow Wallet application from the App Store. [...]

Dysphoria, an Internet of Things (IoT) botnet line tracked by CNCERT and XLab, has adopted blockchain-based name services and infected-device relays after a March law-enforcement operation against JackSkid infrastructure. The researchers say the design makes the botnet harder to disrupt. CNCERT, China's national computer emergency response team, and XLab, the threat-intelligence lab of Chinese

The Coca-Cola Company has confirmed that hackers stole data from its dairy subsidiary, Fairlife, during a ransomware attack earlier this month. [...]

The ShinyHunters extortion gang has claimed responsibility for a recently disclosed Ernst & Young data breach, saying it obtained credentials for some of the company's systems via a supply-chain attack. [...]