React2Shell flaw (CVE-2025-55182) exploited for remote code execution

Cybersecurity researchers have discovered two new malicious extensions on the Chrome Web Store that are designed to exfiltrate OpenAI ChatGPT and DeepSeek conversations alongside browsing data to servers under the attackers’ control. The names of the extensions, which collectively have over 900,000 users, are below – Chat GPT for Chrome with GPT-5, Claude Sonnet &…

A threat actor named Detour Dog has been outed as powering campaigns distributing an information stealer known as Strela Stealer. That’s according to findings from Infoblox, which found the threat actor to maintain control of domains hosting the first stage of the stealer, a backdoor called StarFish. The DNS threat intelligence firm said it has…

San Francisco application security startup raises $100 million in a Series D funding round led by Menlo Ventures.  The post Semgrep Raises $100M for AI-Powered Code Security Platform appeared first on SecurityWeek.

Bill Toulas reports: Hundreds of trojanized versions of well-known packages such as Zapier, ENS Domains, PostHog, and Postman have been planted in the npm registry in a new Shai-Hulud supply-chain campaign. The malicious packages have been added to NPM (Node Package Manager) over the weekend to steal developer and continuous integration and continuous delivery (CI/CD) secrets…….

Ransomware attacks have reached an unprecedented scale in the healthcare sector, exposing vulnerabilities that put millions at risk. Recently, UnitedHealth revealed that 190 million Americans had their personal and healthcare data stolen during the Change Healthcare ransomware attack, a figure that nearly doubles the previously disclosed total.  This breach shows just how deeply ransomware

Two security vulnerabilities have been discovered in the OpenSSH secure networking utility suite that, if successfully exploited, could result in an active machine-in-the-middle (MitM) and a denial-of-service (DoS) attack, respectively, under certain conditions. The vulnerabilities, detailed by the Qualys Threat Research Unit (TRU), are listed below – CVE-2025-26465 – The OpenSSH client