During this period, mmontan@google.com enhanced security and deployment reliability across multiple repositories. In Shubhamsaboo/adk-samples, they implemented Python-based security guardrails for customer service agent tools, introducing prompt injection prevention, customer ID validation, and discount limit enforcement to mitigate risks before approvals and QR code generation. They also modernized documentation in google/adk-docs, updating navigation and content to reflect safer agent patterns using Markdown and YAML. Later, in GoogleCloudPlatform/applied-ai-engineering-samples, they improved cloud infrastructure by replacing placeholder GCS buckets with specific references in deployment configurations and shell scripts, reducing misconfiguration risk and supporting more reliable TPU training on GKE.