Nijiko Yonskai discusses a new feature in API gateway traffic management, introducing Web Application Firewall (WAF) actions designed to block threats before they reach services. This enhancement aims to improve security by intercepting potential threats at the gateway level, thereby protecting internal systems and services. Yonskai, who is a Principal Product Manager at ngrok with prior experience at Kong and Postman, emphasizes the significance of these new WAF actions in enhancing the overall user experience by safeguarding against security vulnerabilities. The feature is promoted across various platforms, highlighting its importance and reach in the tech community.