U.S. prosecutors have charged a Ukrainian national for her role in cyberattacks targeting critical infrastructure worldwide, including U.S. water systems, election systems, and nuclear facilities, on behalf of Russian state-backed hacktivist groups. [...]

SAP has released its December security updates addressing 14 vulnerabilities across a range of products, including three critical-severity flaws. [...]

Microsoft says Windows PowerShell now warns when running scripts that use the Invoke-WebRequest cmdlet to download web content, aiming to prevent potentially risky code from executing. [...]

Microsoft has released the KB5071546 extended security update to resolve 57 security vulnerabilities, including three zero-day flaws. [...]

Microsoft's December 2025 Patch Tuesday fixes 57 flaws, including one actively exploited and two publicly disclosed zero-day vulnerabilities. [...]

Fortinet has released security updates to address two critical vulnerabilities in FortiOS, FortiWeb, FortiProxy, and FortiSwitchManager that could allow attackers to bypass FortiCloud SSO authentication. [...]

Microsoft has released Windows 11 KB5072033 and KB5071417 cumulative updates for versions 25H2/24H2 and 23H2 to fix security vulnerabilities, bugs, and add new features. [...]

American IT software company Ivanti warned customers today to patch a newly disclosed vulnerability in its Endpoint Manager (EPM) solution that could allow attackers to execute code remotely. [...]

Poor IT hygiene, such as unused accounts, outdated software, and risky extensions, creates hidden exposure in your infrastructure. Wazuh, the open-source XDR and SIEM, shows how continuous inventory monitoring across endpoints helps teams spot drift and tighten security. [...]

The National Police in Spain have arrested a suspected 19-year-old hacker in Barcelona, for allegedly stealing and attempting to sell 64 million records obtained from breaches at nine companies. [...]

A new malware implant called EtherRAT, deployed in a recent React2Shell attack, runs five separate Linux persistence mechanisms and leverages Ethereum smart contracts for communication with the attacker. [...]

An initial access broker tracked as Storm-0249 is abusing endpoint detection and response solutions and trusted Microsoft Windows utilities to load malware, establish communication, and persistence in preparation for ransomware attacks. [...]

Microsoft is working to mitigate an ongoing incident that has been blocking users in Europe from accessing the company's AI-powered Copilot digital assistant. [...]

Several ransomware groups have been spotted using a packer-as-a-service (PaaS) platform named Shanya to assist in EDR (endpoint detection and response) killing operations. [...]

Two malicious extensions on Microsoft's Visual Studio Code Marketplace infect developers' machines with information-stealing malware that can take screenshots, steal credentials, and hijack browser sessions. [...]

A new report by the Financial Crimes Enforcement Network (FinCEN) shows that ransomware activity peaked in 2023 before falling in 2024, following a series of law enforcement actions targeting the ALPHV/BlackCat and LockBit ransomware gangs. [...]

The police in Poland arrested three Ukrainian nationals for allegedly attempting to damage IT systems in the country using hacking equipment and for obtaining "computer data of particular importance to national defense." [...]

Google Chrome is introducing a new security architecture designed to protect upcoming agentic AI browsing features powered by Gemini. [...]

Picus Security explains why relying on LLM-generated attack scripts is risky and how an agentic approach maps real threat intel to safe, validated TTPs. Their breakdown shows how teams can turn headline threats into reliable defense checks without unsafe automation. [...]