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A significant gap in Microsoft Teams’ B2B guest access allows attackers to bypass Defender for Office 365 protections, creating unprotected zones for phishing and malware delivery. At Cybersecurity News, we recently highlighted how Microsoft Teams’ New “Chat with Anyone” Feature Exposes Users to Phishing and Malware Attacks. This architectural issue, highlighted by Ontinue, stems from […] The post Microsoft Teams Guest Chat Vulnerability Exposes Users to Malware Attack appeared first on Cyber Security News.
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A newly discovered critical vulnerability in the Next.js framework allows attackers to crash self-hosted servers using a single HTTP request, requiring negligible resources to execute. Discovered by researchers at Harmony Intelligence, the denial-of-service (DoS) flaw affects widespread versions of the framework, including the latest 15.x branch prior to the patch. The vulnerability resides in the […] The post New Unauthenticated DoS Vulnerability Crashes Next.js Servers with a Single Request appeared first on Cyber Security News.
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The Democratic People’s Republic of Korea (DPRK) has intensified its global cyber operations, systematically violating United Nations Security Council resolutions through large-scale cyberattacks, cryptocurrency theft, and cross-border money laundering schemes. According to the Multilateral Sanctions Monitoring Team (MSMT) report, North Korean hackers stole at least USD 1.19 billion in cryptocurrency during 2024 and an additional […] The post North Korean Hackers Evade UN Sanctions Leveraging Cyber Capabilities, IT Workers and Crypto Activities appeared first on Cyber Security News.
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A new research study from Anthropic has uncovered a concerning pattern in large language models: when these AI systems are trained to pursue specific goals, they can develop reward hacking behaviors that lead to malicious actions in other scenarios. The phenomenon, which researchers call “agentic misalignment,” was observed across 16 leading AI models from major […] The post Teaching Claude to Cheat Reward Hacking Coding Tasks Makes Them Behave Maliciously in Other Tasks appeared first on Cyber Security News.
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Water Gamayun, a persistent threat group, has recently intensified its efforts by exploiting a newly identified MSC EvilTwin vulnerability (CVE-2025-26633) in Windows systems. This malware campaign is marked by its use of multi-stage attacks targeting enterprise and government organizations, aiming to steal sensitive information, credentials, and maintain long-term access to networks. Emerging in 2025, these […] The post Water Gamayun APT Hackers Exploit MSC EvilTwin Vulnerability to Inject Malicious Code appeared first on Cyber Security News.
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Microsoft has confirmed that FIDO2 security keys on Windows 11 may now prompt users to set up a PIN during authentication following specific recent updates, aligning with WebAuthn standards for enhanced user verification. The change began with the September 29, 2025, preview update KB5065789 for OS Builds 26200.6725 and 26100.6725, rolling out gradually to Windows […] The post Microsoft Security Keys May Require PIN After Recent Windows Updates appeared first on Cyber Security News.
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Building analyst expertise is a race against time that many Security Operations Centers (SOCs) are losing. New hires often require over six months to handle complex incidents with confidence, creating a bottleneck where senior analysts must compensate for the skills gap. Traditional training, reliant on theories and simulations, struggles to keep pace with the speed […] The post Scaling SOC Team Expertise With AI-powered Insights for Faster, Easier Understanding of Threats appeared first on Cyber Security News.
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A dangerous malware campaign has targeted thousands of developers through a fake extension on the Visual Studio Code Marketplace. On November 21, 2025, security researchers discovered a malicious extension named “prettier-vscode-plus” designed to trick developers into installing it by mimicking the legitimate Prettier code formatter. The extension exploited brand recognition and targeted developers seeking formatting […] The post Malicious Prettier Extension on VSCode Marketplace Delivers Anivia Stealer Malware to Exfiltrate Login Credentials appeared first on Cyber Security News.
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The Federal Bureau of Investigation (FBI) has issued urgent warnings about cybercriminals spoofing the official Internet Crime Complaint Center (IC3) website to conduct phishing attacks and steal sensitive personal information. These fake sites mimic the legitimate www.ic3.gov portal with near-perfect replicas, borrowing content, layouts, and visuals to deceive users into submitting names, addresses, phone numbers, […] The post FBI Warns of Fake Internet Crime Complaint Center (IC3) Website Used for Phishing Attacks appeared first on Cyber Security News.
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The Akira ransomware group has begun weaponizing vulnerabilities in SonicWall SSL VPN devices, turning merger-and-acquisition (M&A) processes into high-speed launchpads for cyberattacks. This trend exposes dangerous blind spots for businesses acquiring smaller companies, as inherited SonicWall devices often serve as easy entry points for attackers. How Akira Ransomware Targets M&A Environments During mergers and acquisitions, […] The post Akira Ransomware Uses SonicWall VPN Exploit to Exfiltrate Sensitive Data appeared first on Cyber Security News.
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