[Nina Rong: PHP Not Used in BNB Chain's Tech Stack] Nina Rong, Growth Executive Director of BNB Chain, stated in a post that PHP is not used in BNB Chain's tech stack and reminded users to stay vigilant about security. The NSA Cybersecurity Directorate of the U.S. National Security Agency (NSA Cyber) issued a notice stating that organizations using PHP to build systems should prepare to patch two critical vulnerabilities, which could provide direct access to the server's file system.