February 06 2026 - AI Builds AI: GPT-5.3, Agent Wallets & Spy ExtensionsAI Builds AI: GPT-5.3, Agent Wallets & Spy Extensions

OpenAI's GPT-5.3-Codex helped build itself, boosting agentic coding performance and speed. A PR race with Anthropic heats up as startups like Sapiom enable AI agents to handle payments, while Chrome extensions may be harvesting sensitive data. Risks and implications for developers, security, and privacy.