An open letter for a global surge in cyber defense

We have a limited window to strengthen cyber defenses. In the coming months, AI-enabled cyber attacks will become far more widespread and sophisticated as models around the world become increasingly capable. The companies and public services our communities depend on—from Read More …

China-Linked Hacking Group QTFY Targets Military and Critical Infrastructure with Malicious Distributed Systems

The Federal Bureau of Investigation, National Security Agency, and Cyber National Mission Force are releasing this joint cybersecurity advisory to alert organizations concerning China-linked cyber threat actors, who use the acronyms QTFY, QT, and QTCYBER for themselves and their tools Read More …

StopRansomware: Gunra Ransomware

Gunra is a ransomware-as-a-service (RaaS) used by affiliates to target government, critical infrastructure, and other organizations. The Gunra ransomware variant first appeared in 2025 and expanded to RaaS operations in 2026. The actors leverage a double-extortion model, both encrypting data Read More …

Security researchers scanned the Polish web and found courts, hospitals, and airports at risk of hacks

Two Polish security researchers wanted to find out how vulnerable their country’s internet was to potential cyberattacks and quickly found that thousands of public agencies and websites were at risk of being hacked. At the Def Con cybersecurity conference in Read More …

Iran-linked CyberAv3ngers suspected in attacks on Minnesota water systems

Security researchers at Tenable suspect the Iran-linked faux hacktivist outfit CyberAv3ngers was behind the cyberattack that disrupted more than 30 Minnesota water facilities. Neither state-level nor federal officials have made any claims regarding attribution for the attacks, however, Tenable reckons the operational Read More …

CISA has expanded the scope of its alert on Iranian-affiliated hackers attacking critical infrastructure

The US Cybersecurity and Infrastructure Security Agency (CISA) has expanded the scope of its alert on Iranian-affiliated hackers attacking critical infrastructure, including water and energy facilities. The original advisory focused on programmable logic controllers (PLCs) manufactured by Rockwell Automation/Allen-Bradley. The update warns that the Read More …

Experts warn hackers could shut down entire power grids by hijacking cloud accounts

Whenever an AI data center thinks really, really hard, it can increase its power consumption so much to trigger disruptions and possibly even blackouts and gear malfunctions. So, is it possible for a malicious actor to trigger this scenario deliberately, Read More …

Three Steps to the Terminal: A Siemens ROX II Zero-Day Trilogy

Palo Alto Unit 42 conducted this research in close partnership with Siemens, reflecting their shared commitment to advancing the security and resilience of critical infrastructure. This report details a critical, chained exploit comprising three zero-day vulnerabilities (CVE-2025-40948, CVE-2025-40947, and CVE-2025-40949) Read More …

Hackers who gained access to heart of London transport network jailed

The data of millions of commuters was stolen, Londoners were left out of pocket and 27,000 Transport for London staff were forced to reset their passwords. Over four days in 2024 a pair of teenage hackers had London’s transport network at their Read More …

EU-UK sanctions target Russia over Europe-wide ‘vast cyber campaign’

The European Union and the UK have announced coordinated sanctions against Russia after accusing Moscow’s FSB intelligence agency of carrying out a cyber attack in December targeting Poland’s energy grid and orchestrating a wider campaign of digital sabotage across Europe. Read More …