Sebastien Rousseau
Portrait noir et blanc de Sebastien Rousseau

Sebastien Rousseau

Sécuriser l'avenir de la banque
avec l'IA agentique
et la cryptographie post-quantique.

Open-source payments, post-quantum security, and applied AI for financial services.

Soft natural light over a modern architectural space, representing dependable financial infrastructure.

What I build

Open source pour l'avenir de la finance.

Payments

ISO 20022, end to end: pain.001, pacs.008, camt.053, and acmt.001. Adopt one library at a time.

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Security

Post-quantum primitives: ML-KEM (CRYSTALS-Kyber, NIST FIPS 203) and hashing, ready to pilot today.

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Tooling

Audited Rust libraries and a code security scanner, signed and shipped with a software bill of materials.

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Proof

By the numbers.

37.1MOpen-source downloads
663GitHub stars
84Sigstore-signed articles
19Years in payments and banking
Isometric render of an illuminated processor, representing the cryptographic foundations of payments.

EPAA · septembre 2025

Pourquoi le secteur des paiements doit agir maintenant.

Regulators are treating harvest-now-decrypt-later as a credible present risk. This paper, produced for the Emerging Payments Association Asia, sets out the structural threat and the case for coordinated action across wholesale payment rails.

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Récent

Depuis le bureau.

Abstract horizon of converging signal lines — AI, synthetic media, and programmable-money rails resolving over a banking skyline, evoking a supervisory scan of emerging-technology risk for financial services in 2026
Emerging Technology · Horizon Scanning · FCA

Reading the Emerging-Technology Risk Horizon for Banks in 2026

TL;DR Une lecture originale de l'horizon des risques technologiques émergents pour les banques en 2026 — intelligence personnalisée par IA, criminalité financière synthétique et finance programmable — avec un cadre signaux-vers-supervision, s'appuyant sur le Technology Horizon Scan 2026 de la FCA.