Tan Pei Si (Kaskrex) is a seasoned developer with a strong interest in cybersecurity. Pei Si is an active advocate in the Singapore cybersecurity community — she actively contributes to Division Zero (Div0) and Infosec In the City/SINCON. She is also the pioneer member of Div0’s Car Security Quarter (CSQ). Pei Si’s interest lies in Digital Forensics & Incident Response (DFIR), hardware hacking and DevSecOps.