From AWS re:Invent 2025 – KB On The Go | CJ Moses, Hart Rossman, and Mark Ryland

In this bonus episode, KB sits down with CJ Moses, CISO at Amazon, Hart Rossman, VP of Global Security Services at AWS, and Mark Ryland, Director, AWS Security. Together they discuss the realities of “planetary scale security,” AI-powered defenses, and the shifting mindset that’s driving organizations to adopt automation and agentic technologies faster than ever before. CJ Moses, CISO, Amazon CJ Moses, CISO at Amazon, leads security engineering and operations across the company. His mission is to enable Amazon businesses by making the benefits of security the path of least resistance. CJ joined Amazon in December 2007, holding various roles including Consumer CISO and AWS CISO, before becoming CISO of Amazon in September 2023. Before Amazon, CJ led the technical analysis of computer and network intrusion efforts at the Federal Bureau of Investigation’s Cyber Division and served as a Special Agent with the Air Force Office of Special Investigations (AFOSI). CJ led several computer intrusion investigations seen as foundational to the security industry today. CJ holds degrees in Computer Science and Criminal Justice and is an active SRO GT America GT2 Race car driver. Hart Rossman, VP of Global Security Services, AWS Hart Rossman is the VP of Global Security Services at AWS. He leads a team of geographically distributed AWS builders who help customers realise the benefits of planetary-scale security solutions in the cloud, with a focus on innovating with internal teams and partners. Prior to AWS, he was VP & CTO of Cyber Security Services & Solutions at SAIC. Mark Ryland, Director, AWS Security Mark Ryland is a Director, AWS Security, reporting to the CISO of AWS, and engaging with a variety of external and internal stakeholders on behalf of the AWS Security leadership team. Externally, he focuses on public policy initiatives and public sector regulators and customers on issues related to cloud and AI security. Internally, he works with AWS service teams by channelling the perspectives of external stakeholders to influence their plans and priorities. In addition, Ryland works with industry partners to enhance the security of the broader information technology ecosystem as Amazon’s representative on the governing board of the Open Source Security Foundation (OpenSSF), as well as in industry groups focusing on the security and reliability of cutting-edge artificial intelligence systems such as the Frontier Model Forum (FMF) and the Coalition for Secure AI (CoSAI).Ryland has more than 34 years of experience in the technology industry across a wide range of leadership roles in information security, software engineering, distributed systems, technical standardisation, and public policy. Most recently he founded and ran AWS’s Office of the CISO from 2018 to 2023, a team with which he still collaborates closely on a variety of matters. Prior to that, he was the Director of Solutions Architecture and Professional Services for the AWS Worldwide Public Sector team, founding the team in 2011 and growing it to a large global organisation through early 2018. Before joining AWS, Ryland worked for Microsoft for 13 years in two different stints (1991-2000 and 2008-2011) in multiple roles including Lead Program Manager for COM/DCOM, and founder and Director, Standards Strategy Group. In between work at Microsoft, he was co-founder and CTO of two start-ups, and served as vice president and director of the Washington DC office of a public policy think tank.