2026-07-29 Briefing

UC San Diego engineers created a smart ring that analyzes sweat to track glucose, vitamin C, alcohol, and ketones, though battery life and interference are concerns. Only 1.3% of AI-discovered vulnerabilities are exploited, matching traditional flaws, according to VulnCheck. Tokenless, a YC startup, introduced an API gateway that dynamically switches AI models to cut costs, claiming parity with…