PannonRex — Insights https://www.pannonrex.com/insights Practical articles by PannonRex engineers on re-engineering legacy systems, Delphi migration, security and EU regulation. Every fact sourced. en Tue, 06 Oct 2026 00:00:00 GMT From Delphi desktop to web services in an oil refinery https://www.pannonrex.com/insights/case-oil-gas-production-system https://www.pannonrex.com/insights/case-oil-gas-production-system Tue, 06 Oct 2026 00:00:00 GMT Peter Illes Case study: a refinery platform of 100+ Delphi applications. Proven Delphi logic became web services behind an API, with a new web UI on the same database. Case study Delphi Re-engineering Energy Web applications API The Delphi talent pipeline, in numbers https://www.pannonrex.com/insights/delphi-talent-pipeline https://www.pannonrex.com/insights/delphi-talent-pipeline Tue, 06 Oct 2026 00:00:00 GMT Daniel Illes Nearly 6 in 10 professional Delphi developers are over 45, and 28% are 55 or older. What the retirement wave means, and how to keep the knowledge. Delphi Key-person risk Knowledge transfer Legacy modernisation Java Re-engineering Testing a Delphi or .NET migration, and what it saves later https://www.pannonrex.com/insights/testing-legacy-migration https://www.pannonrex.com/insights/testing-legacy-migration Tue, 06 Oct 2026 00:00:00 GMT Martin Rodriguez Sainz Why automated tests decide whether a migration is safe, how to build them in Delphi, .NET and Java, and how much manual regression work they remove later. Testing Test automation Delphi .NET Legacy modernisation Re-engineering Security and platform risks in legacy Delphi https://www.pannonrex.com/insights/legacy-delphi-security-risks https://www.pannonrex.com/insights/legacy-delphi-security-risks Mon, 05 Oct 2026 00:00:00 GMT Peter Illes Where an old Delphi client–server system is exposed, from OpenSSL 1.0.2 to shared database logins, with a 20-point self-audit and fixes short of migration. Delphi Security Legacy modernisation TLS SQL injection Re-engineering Legacy systems and EU law: GDPR, NIS2, DORA, CRA https://www.pannonrex.com/insights/legacy-systems-eu-law https://www.pannonrex.com/insights/legacy-systems-eu-law Mon, 05 Oct 2026 00:00:00 GMT Peter Illes No EU law says migrate, but GDPR, NIS2, DORA and the CRA each ask for things an old, unpatchable system struggles to deliver. Article by article. Legacy modernisation GDPR NIS2 DORA Cyber Resilience Act Compliance Why legacy systems change slowly, and how to measure it https://www.pannonrex.com/insights/why-legacy-systems-change-slowly https://www.pannonrex.com/insights/why-legacy-systems-change-slowly Mon, 05 Oct 2026 00:00:00 GMT Tibor Horváth Why legacy Delphi systems release quarterly and every release is a risk, how to measure it in a week with the four DORA metrics, and what speeds it up. Delphi Legacy modernisation DORA metrics Testing CI/CD Re-engineering