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Cybersecurity researchers have disclosed details of a vulnerability in OpenAI ChatGPT that leverages the artificial intelligence (AI) assistant's implicit trust in Markdown links and images to trigger prompt injections and open the door to phishing attacks. The technique has been codenamed ChatGPhish by Permiso Security. "The chatgpt.com response renderer trusts Markdown links and Markdown

Noteworthy stories that might have slipped under the radar: Trump Mobile exposes customer data, phishers target the 2026 FIFA World Cup, CISA responds to recent supply chain attacks. The post In Other News: Trump Mobile Data Breach, FIFA World Cup Phishing, CISA Responds to Supply Chain Attacks appeared first on SecurityWeek.

The notorious ShinyHunters extortion group leaked over 42 million records allegedly stolen from Charter in April. The post Charter Communications Data Breach Could Impact Nearly 5 Million appeared first on SecurityWeek.

An unknown threat actor has been observed using a large language model (LLM) agent to conduct post-compromise actions after obtaining initial access following the exploitation of a publicly-accessible Marimo network using a recently disclosed vulnerability. "The attacker compromised an internet-reachable Marimo notebook via CVE-2026-39987, extracted two cloud credentials from the compromised

MokN's platform deploys realistic decoy access points to lure attackers into revealing compromised credentials, enabling organizations to respond before abuse occurs. The post MokN Raises $15 Million for Phish-Back Platform appeared first on SecurityWeek.

The critical-severity issue, assigned a CVSS score of 9.4, is an argument injection flaw that can be exploited by authenticated attackers via pull requests with malicious branch names. The post Gogs Zero-Day Exposes Servers to Remote Code Execution appeared first on SecurityWeek.

A previously undocumented threat actor dubbed GREYVIBE has been attributed to ongoing and persistent attacks targeting Ukraine and Ukraine-related entities since at least August 2025. GREYVIBE, per WithSecure, is assessed to be a Russian-speaking group operating broadly in the Russian time zone, with the activities aligning with Kremlin state interests, specifically when it comes to

Attorney General Rob Bonta filed the lawsuit against Chrome Holding Co., which 23andMe rebranded under after filing for bankruptcy last March. The post California Sues 23andMe, Alleging It Failed to Protect User Data in 2023 Breach appeared first on SecurityWeek.

Shadow AI used to mean employees pasting things they shouldn't into ChatGPT. It now means something bigger: employees building full applications with AI, wiring them into production systems, and publishing them on the open internet. Without Security or IT in the loop. The artifact moved from a prompt to a product. The risk surface moved with it. In The Shadow Builders report (get it here), a

The browser update resolves critical-severity security defects that could potentially lead to remote code execution. The post Chrome 148 Update Patches 151 Vulnerabilities appeared first on SecurityWeek.

Cybersecurity researchers have discovered a malicious NuGet package that masquerades as a C# software development kit for Sicoob, one of Brazil's largest cooperative financial systems, to siphon client IDs and PFX certificates. According to Socket, versions 2.0.0 through 2.0.4 of "Sicoob.Sdk" contain functionality to exfiltrate sensitive information, including PFX certificates that are used to

The North Korean state-sponsored threat actor known as Kimsuky (aka Velvet Chollima) has been attributed to a fresh set of cyber attacks targeting South Korean military and corporate entities through March and April 2026. "Kimsuky employed a range of tailored social engineering tactics, such as spoofing security software installation pages and crafting a fake Webex meeting page that leveraged

Researchers warn GreyVibe’s extensive use of ChatGPT, Gemini, and other AI tools offers a glimpse into how future cybercriminal and state-aligned groups will operate. The post Russia-Linked ‘GreyVibe’ Attackers Use AI to Supercharge Cyberattacks appeared first on SecurityWeek.

A critical security vulnerability has been disclosed in Gogs, a popular open-source self-hosted Git service, that allows an authenticated user to execute arbitrary code under certain conditions. The security flaw, per Rapid7, is rated 9.4 on the CVSS scoring system. It does not have a CVE identifier. "The vulnerability allows any authenticated user to achieve remote code execution (RCE) on

The funding round was led by Balderton Capital, with additional support from Crosspoint Capital and previous investors General Catalyst and Ten Eleven Ventures. The post Geordie Raises $30 Million for AI Security and Governance Platform appeared first on SecurityWeek.