GPT‑5.4‑Cyber is a model fine-tuned for defenders, lowering boundaries for legitimate cybersecurity work.
The post OpenAI Widens Access to Cybersecurity Model After Anthropic’s Mythos Reveal appeared first on SecurityWeek.
OpenAI Impacted by North Korea-Linked Axios Supply Chain Hack
The AI giant is taking action after determining that a macOS code signing certificate may have been compromised.
The post OpenAI Impacted by North Korea-Linked Axios Supply Chain Hack appeared first on SecurityWeek.
Critical Vulnerability in OpenAI Codex Allowed GitHub Token Compromise
Researchers found an OpenAI Codex vulnerability that could have been exploited to compromise GitHub tokens.
The post Critical Vulnerability in OpenAI Codex Allowed GitHub Token Compromise appeared first on SecurityWeek.
OpenAI Launches Bug Bounty Program for Abuse and Safety Risks
Through the new program, OpenAI will reward reports covering design or implementation issues leading to material harm.
The post OpenAI Launches Bug Bounty Program for Abuse and Safety Risks appeared first on SecurityWeek.
OpenAI to Acquire AI Security Startup Promptfoo
Promptfoo has raised more than $23 million in funding for a platform that helps developers secure LLMs and AI agents.
The post OpenAI to Acquire AI Security Startup Promptfoo appeared first on SecurityWeek.
OpenAI Rolls Out Codex Security Vulnerability Scanner
Codex Security, formerly Aardvark, has found hundreds of critical vulnerabilities in tested software in the past month.
The post OpenAI Rolls Out Codex Security Vulnerability Scanner appeared first on SecurityWeek.
Vulnerability in OpenAI Coding Agent Could Facilitate Attacks on Developers
The Codex CLI vulnerability tracked as CVE-2025-61260 can be exploited for command execution.
The post Vulnerability in OpenAI Coding Agent Could Facilitate Attacks on Developers appeared first on SecurityWeek.
OpenAI User Data Exposed in Mixpanel Hack
Multiple Mixpanel customers were impacted by a recent cyberattack targeting the product analytics company.
The post OpenAI User Data Exposed in Mixpanel Hack appeared first on SecurityWeek.
ChatGPT Vulnerability Exposed Underlying Cloud Infrastructure
A researcher found a way to exploit an SSRF vulnerability related to custom GPTs to obtain an Azure access token.
The post ChatGPT Vulnerability Exposed Underlying Cloud Infrastructure appeared first on SecurityWeek.
SesameOp Malware Abuses OpenAI API
A component of the newly discovered SesameOp backdoor uses the API to store and relay commands from the C&C server.
The post SesameOp Malware Abuses OpenAI API appeared first on SecurityWeek.
