Ship fast on a security contract you don’t have to build.
FinTechs live on regulated rails while moving at startup speed. B5 Secure gives a .NET team the per-request, data-element enforcement that banks expect — as configurable pipeline behavior rather than security code scattered across the product.
FinTech products often sit between a sponsor bank, payment processors, and end users — an architecture where the same request crosses several trust boundaries. The hard problems are not exotic: over-broad API keys, missing object-level checks, replayable calls, and machine-to-machine credentials that are trusted simply because they originate inside the perimeter. As products add AI copilots and automated workflows, the number of non-human callers grows faster than the controls around them.
B5 Secure is a .NET security framework, not a certification. The mapping below shows where its controls help implement a requirement — the certification and assessment remain the operator’s.
| Requirement / framework | What it asks for | How B5 maps to it |
|---|---|---|
| SOC 2 | Logical access, change management, and monitoring controls. | Maps to access-control and audit-logging controls; B5 produces per-request authorization evidence. |
| PCI DSS | Protect cardholder data and restrict access to it. | Where card data is in scope, B5 helps reduce who and what can reach it via scoped keys and data-element authorization. Designed to support — not a substitute for a QSA assessment. |
| GLBA Safeguards | Access controls and risk-based protection of customer financial data. | B5’s least-privilege, deny-by-default model helps implement the access-control safeguards. |
| GDPR / CCPA-CPRA | Lawful access and data-minimization. | B5’s limit-the-data-returned default and field-level authorization help implement data-minimization at the API. |
Enforcement at the line of code.
Data-element authorization
Authorize the action and the specific record it touches — the direct control against BOLA/IDOR, the most common API breach class.
Scoped credentials
Service-Key and Service-HMAC grant an integration only the endpoints and objects it needs, shrinking the blast radius of a leaked key.
Signed, replay-resistant requests
Keyed HMAC over the request with timestamp expiry and nonce-based replay prevention; an RFC 9421 profile is on the roadmap.
Machine & agent identity
Services, jobs, and AI agents are first-class identities authenticated on every call — no shared secret trusted by location.
AI copilots and automated underwriting or reconciliation agents act on a customer’s behalf. B5’s model treats each agent as an identity bound by the user’s permits, re-checked per request and per data element — so an agent cannot reach data the user could not, and access can be revoked mid-flight on a risk signal.
B5 Secure is a .NET security framework, not a banking license, a payment processor, or a compliance certification. It helps a team implement and evidence access controls; it does not by itself make a product “compliant.” Certifications, assessments, and regulatory approvals remain the operator’s responsibility, and B5 is designed to make that work easier to pass — not to replace it.
RelatedBuild the product. Inherit the security contract.
Talk to us about putting bank-expected, data-element enforcement under your FinTech product on .NET 10.
Regulated-grade enforcement, at the record.
Thirty minutes with a B5 engineer: your industry’s obligations, the B1–B5 pipeline, and a data-element authorization decision you can watch happen — with the evidence trail your examiners ask for.