"A Note from the Author" I work in the Technical Support division of an AWS reseller operating under the AWS Solution Provider Program in Japan. This post is written from that perspective — sitting between our customers and AWS, handling incidents day-to-day. Japan's IT industry has traditionally relied heavily on outsourcing to external vendors for building and managing cloud infrastructure, rather than developing in-house capabilities. This means that when a security incident like an access key leak occurs, the response often involves coordination across multiple organizations, which can slow down decision-making at a critical moment. Some of the observations in this post reflect that reality. Also, my English writing skills are limited, so I used GenAI (Kiro CLI) to help translate this article from the original Japanese. I hope it reads well — any awkwardness is on me, not the AI. Hello, everyone. I'm Ichino from the Technical Support team, and I'm a big fan of the AWS CLI.…