October 2025 monthly summary for guardian/mobile-n10n. Focused on stabilizing and securing the Registration Cleaner Worker by correcting a CloudFormation security group misconfiguration and simplifying the network path for notifications. The fix ensures the worker uses the VPC default security group, reducing deployment and runtime issues and improving security posture. A prior non-VPC SG change was reverted to restore a safe, default-state deployment. This work enhances reliability of the notification workflow and reduces incident risk in production.

September 2025 highlights: Security hardening, dependency alignment, and foundational releases across Guardian mobile services. Deliverables and fixes span Netty vulnerability mitigations, HTTP/2 protection, AWS SDK compatibility adjustments, and a major release with security posture improvements. Business value is delivered via reduced risk, improved stability, and cleaner upgrade paths for future iterations.