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Engineering articles
How we build NNSFlow: architecture deep-dives, performance, and security engineering.
Engineering
Air-gapped deployment: what actually breaks
Most web apps that claim to run on-premise have not been tested with the network unplugged. The result is a long tail of things that silently fail, hang, or quietly phone home. Here is the audit checklist we run before every on-prem release.
Antoine Bedaton
05 Mar 202611 min read
on-premise
Engineering
The four-eyes principle: from regulation to system architecture
Almost every compliance system claims to support 'four-eyes review'. Most ship a checkbox. Here is what it takes to make the principle survive contact with a real organisation.
Antoine Bedaton
08 Jan 20267 min read
architecture
Engineering
Building tamper-evident evidence with SHA-256 hash chains
How NNSFlow guarantees that an evidence snapshot captured during a screening session today is bit-identical when an auditor opens it years later, without trusting the storage layer.
Antoine Bedaton
15 Dec 20257 min read
cryptography