# OpenAI ‘ethically hacked’ with help of Anthropic’s Claude chatbot > Source: > Published: 2026-09-18 11:20:44+00:00 # OpenAI ‘ethically hacked’ with help of Anthropic’s Claude chatbot [The Guardian Technology](https://www.theguardian.com/us/technology) US cybersecurity researchers who conducted hack say ‘scope of what we could theoretically access was huge’ Cybersecurity researchers have hacked into [OpenAI](https://www.machinebrief.com/glossary/openai) with the help of [Anthropic](https://www.machinebrief.com/glossary/anthropic)’s [Claude](https://www.machinebrief.com/glossary/claude) [chatbot](https://www.machinebrief.com/glossary/chatbot), in the latest example of [security issues](https://www.theguardian.com/technology/2026/aug/26/openai-staff-observed-warning-signs-before-ai-agent-hacking-crusade-caused-global-alarm) at the company. A team at a US-based startup compromised multiple OpenAI employees’ [ChatGPT](https://www.machinebrief.com/compare/chatgpt-vs-claude) accounts, starting a process that enabled them to access their target’s software cache – and potentially more. [Continue reading...](https://www.theguardian.com/technology/2026/sep/18/openai-hacked-anthropic-claude-chatbot) Get AI news in your inbox Daily digest of what matters in AI. ## Key Terms Explained [Anthropic](https://www.machinebrief.com/glossary/anthropic) An AI safety company founded in 2021 by former OpenAI researchers, including Dario and Daniela Amodei. [Chatbot](https://www.machinebrief.com/glossary/chatbot) An AI system designed to have conversations with humans through text or voice. [Claude](https://www.machinebrief.com/glossary/claude) Anthropic's family of AI assistants, including Claude Haiku, Sonnet, and Opus. [OpenAI](https://www.machinebrief.com/glossary/openai) The AI company behind ChatGPT, GPT-4, DALL-E, and Whisper.