New research from Irregular shows AI agents can retrain and redeploy their own underlying models during routine maintenance tasks. The post AI Agents Can Retrain Own Models Mid-Task, Leaking Secrets and Erasing Refusals appeared first on SecurityWeek.
A security breach at Gyazo, Helpfeel’s image-sharing service, exposed about 23.62 million user records, including email addresses and password hashes, the Kyoto-based company said in a notice published Wednesday. It also exposed about 490 million image metadata records, mostly for images from January 2019 or earlier, including the IDs that make upRead More »Gyazo Breach Exposes 23.62 Million User Records and 490 Million Image Metadata Records
Cisco has warned of a fresh maximum-severity security flaw impacting Identity Services Engine (ISE) that has come under active exploitation. The vulnerability, tracked as CVE-2026-76460 (CVSS score: 10.0), could allow an unauthenticated, remote attacker to bypass authentication. “This vulnerability is due to insufficient authentication control on an API endpoint,” CiscoRead More »Cisco Warns of New Zero-Day ISE Auth Bypass (CVSS 10.0) Exploited in Active Attacks
Remote, unauthenticated attackers can exploit the vulnerability to bypass authentication via crafted requests. The post Active Exploitation Triggers Emergency Patch for Cisco ISE Zero-Day appeared first on SecurityWeek.
The U.S. Department of Justice (DoJ) on Tuesday announced the court-authorized seizure of internet domains associated with a distributed denial-of-service (DDoS)-for-hire service known as NightmareStresser. The domains in question are: nightmare-stresser[.]com and nightmarestresser[.]org. Visitors to the site are now greeted by a seizure banner that states – “This domain hasRead More »U.S. Seizes NightmareStresser Domains Linked to Hundreds of Thousands of DDoS Attacks
The consumer data broker Radaris.com has long had a reputation for ignoring requests to remove personal information from its vast empire of people-search services online. That reputation caught up with the company recently in a lawsuit alleging Radaris violated a New Jersey privacy law that provides for hefty fines againstRead More »Data Broker Radaris Loses Domains in Privacy Fight
Spanish regulators say an AI agent chained together a successful login, vulnerability discovery, and access to personal data in a potential milestone for autonomous cyberattacks. The post First Agentic AI Data Breach Reported to Spanish Regulator appeared first on SecurityWeek.
A critical security flaw in Issabel Framework, a web-based framework for the open-source unified communications PBX software, has come under active exploitation. The vulnerability in question is CVE-2026-89026 (CVSS v3.1 score: 9.8/CVSS v4.0 score: 9.3), which can allow an unauthenticated remote attacker to execute arbitrary operating system (OS) commands byRead More »Attackers Exploit Issabel Framework Flaw Enabling Unauthenticated OS Command Execution
Enterprises in Russia have emerged as the target of three threat activity clusters tracked as NightEagle, Hacking Cat, and Toy Ghouls, according to multiple reports from Kaspersky. The cybersecurity vendor said it has identified attacks mounted by NightEagle (aka APT-Q-95), a threat actor known to be active since at leastRead More »Three Threat Groups Target Russian Enterprises With Backdoors, Ransomware, and Wipers
Security researchers at Forever Security have shown that one ordinary browser extension could take control of the AI assistants built into five Chromium-based products: Gemini Live in Chrome, Perplexity Comet, Microsoft Edge, Opera Neon and the Claude in Chrome extension. Once the extension was installed, it could access each product’s built-in AIRead More »One Extension Could Hijack AI Assistants Across Chrome, Comet, Edge, Opera Neon and Claude
