Árni Gunnar Ragnarsson·November 21, 2025

#25.47 - Two Weeks of Major Platform Improvements

Security Hardening

The past two weeks included some of the most important security work I've done on Itsy. I discovered and fixed a critical workspace isolation vulnerability where users could potentially access other workspaces by manipulating browser data—something that needed immediate attention. I also strengthened authentication token validation to prevent forgery attacks and improved how the system distinguishes between different authentication methods, which was causing some false security warnings.

To make future deployments more secure, I've added comprehensive documentation including deployment guides and a production security checklist. It feels good knowing the platform is significantly more secure now.

Dynamic Trip Management

I'm excited to introduce flexible trip management capabilities that fundamentally change how trips can be created and managed. Instead of relying solely on pre-defined templates, you can now create and modify trips on-demand based on real-time needs. This includes dynamic scheduling, enhanced monitoring through new dashboard views, and better support for ad-hoc routing and last-minute operational changes. This upgrade brings much more flexibility to day-to-day operations.

Platform Performance & Modernization

I completed a major upgrade of Itsy's core technology stack, bringing the platform up to the latest versions of React 19 and Next.js 16. This delivers noticeably faster page loads, quicker form responses, and smoother overall performance throughout the system. The admin interface is particularly snappier now, and all dependencies have been updated to their latest secure versions, reducing potential vulnerabilities.

Enhanced System Monitoring

One of the improvements I'm most proud of is the new comprehensive monitoring system. Every request now captures detailed diagnostic information, with automatic warnings for operations taking over a second. I've improved error logging to help identify and resolve issues faster, and cleaned up the system logs by removing the outdated Sentry integration. This gives me much better visibility into how the platform is performing and where attention might be needed.

Bug Fixes

Finally fixed the persistent issue with report parameters—date pickers, dropdowns, and other filter controls now display correctly instead of showing as plain text fields. This had been bothering me for a while, so it's satisfying to have it resolved.

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These two weeks represent a significant step forward in making Itsy more secure, performant, and operationally flexible. The platform feels more solid and ready for growth.

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