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Security · 6 min read

A cybersecurity checklist for fintech startups

Fintech carries a security bar most other startup categories don't — here's the specific checklist that bar actually requires.

Quick summary
  • Encryption at rest and in transit is table stakes, not a differentiator, in fintech.
  • Banking and payment partners will audit your security posture before onboarding you.
  • Access control needs to be provably least-privilege, not just informally restricted.
  • A documented incident response plan is often explicitly required by partners, not optional.

Encryption is the floor, not a selling point

In fintech specifically, encrypting data at rest and in transit is an assumed baseline that partners and regulators check for, not something that differentiates a company. Treating it as day-one infrastructure rather than a future roadmap item is essential.

Partners will audit you before working with you

Banking-as-a-service providers, payment processors, and other fintech infrastructure partners typically run their own security review before onboarding a new fintech company. Being unprepared for that review can delay a partnership integration by weeks or months.

“Being unprepared for a partner's security review can delay an integration by weeks or months.”

Access needs to be provably least-privilege

'We're careful about who has access' isn't sufficient for fintech-level scrutiny — access control needs to be documented, reviewable, and provably restricted to only what each role genuinely needs, with a clear audit trail showing that restriction is enforced, not just assumed.

floor
not a selling point: encryption at rest and in transit
partner audits
expect them before onboarding, not after
documented
incident plan, often explicitly required

A written incident response plan is often required, not optional

Many fintech partners explicitly require evidence of a documented, tested incident response plan as part of their own due diligence. Having this ready before it's requested avoids a scramble that can stall an important partnership at a critical moment.

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