Prof. Yu participated in K-12 Spring Science Symposium hosted by New Hampshire Science Teachers' Association (NHSTA) in 2016. She organized a session "Simple Math Strong Security - Computer Security 101" at the K-12 Spring Science Symposium on April 2, 2016 at Pinkerton Academy in Derry, NH. In this workshop, Prof. Yu and her student Jaya Dofe introduced how we can use simple mathematics computation to build strong security features for computer hardware. In the lecture session, security threats on computer hardware and the history of cryptography were presented. In hand-on session, encryption and decryption exercise based on simple ciphers were guided. In demo session, practical security attack were demonstrated.