Joylynn Kirui is a senior cloud security advocate at Microsoft. She focuses on DevSecOps on GitHub and Azure, which includes application security. She is an infosec evangelist who believes in empowering developers and users in general on security best practices. She has vast experience in web and mobile app security testing, DevSecOps, and GSM security, having previously worked in the telco industry. She has a passion for mentorship and training students and empowering them. She has spoken at several conferences, where she shares her knowledge in cybersecurity and software development. She was among the Top 50 Women in Cyber Security Africa 2020 finalists, Woman Hacker of the Year Africa 2020 finalists, and Young CISO Vanguard 2022, among others. When not hacking, she enjoys farming, traveling, and adrenaline-filled activities.