According to Greg Brockman, OpenAI's Codex is getting very good at finding security vulnerabilities, and OpenAI is exploring trusted access programs for defensive cybersecurity to help enterprises and the open-source community ship more secure code. Source: Greg Brockman on X (Dec 18, 2025) https://twitter.com/gdb/status/2001758799657603185; OpenAI https://openai.com/index/introducing-gpt-5-2-codex/ For crypto traders, stronger vulnerability discovery and secure development practices are materially relevant because flaws in smart contracts can lead to irreversible loss of funds in DeFi. Source: Ethereum.org smart contract security guidelines https://ethereum.org/en/developers/docs/smart-contracts/security/