Binu Ramakrishnan is a principal security engineer at Yahoo with more than a decade of experience building Internet-scale systems, anti-abuse and application security. He currently leads security engagements with Yahoo mail, and work closely with product engineers and leaders to help define and implement strategic security programs. His recent research interests include platform security and data protection at scale. Prior to this role, he worked as a lead engineer with security platforms engineering team, built hosted key management service and wrote various shared components that are used across Yahoo. Binu is an active participant in industry wide initiative to secure mail SMTP STARTTLS, and contributed to the recent SMTP STS efforts. He is also the author of few open source security tools.