Security testing built for the speed of fintech

PCI DSS requires regular penetration testing

PCI DSS 11.4 mandates penetration testing at least annually and after significant changes. With Penetrify, every deployment is a test. You're always current, and you always have evidence for your QSA.

Payment logic vulnerabilities are invisible to scanners

Race conditions in transfer flows, IDOR on account IDs, and business logic bypasses in payment workflows require an AI that understands application context, not a DAST scanner firing fixed payloads.

Regulatory scrutiny is only increasing

DORA in the EU, FCA requirements in the UK, and SEC cybersecurity rules in the US all require demonstrable, ongoing security testing. Point-in-time annual pentests no longer satisfy regulators who understand how fast fintech teams ship.

Requirement 11.4.1: documented pentest methodology; internal and external testing at least every 12 months and after significant changes

Articles 24–25: annual resilience testing of critical systems; Article 26: TLPT at least every 3 years for designated entities

CC6.1: Logical access controls with penetration testing evidence

A.12.6: Technical vulnerability management including regular penetration testing

PSD2 and Strong Customer Authentication: What Testing Has to Cover

PSD2 has required strong customer authentication since September 2019, and the technical standard behind it (Commission Delegated Regulation (EU) 2018/389) is specific about what SCA means: two independent elements, dynamic linking of the authentication code to the amount and the payee, and a closed list of exemptions. Every one of those is a testable assertion, and every one of them is somewhere a real implementation slips.

The failures we see are rarely "SCA is missing". They are SCA that can be bypassed by replaying an authentication code against a different amount, dynamic linking that is validated client-side, exemption logic (low-value, trusted beneficiary, transaction risk analysis) that an attacker can trigger by manipulating a request field, and step-up authentication that protects the payment endpoint but not the endpoint that edits the payee. Testing for this needs an agent that understands the flow, not a scanner matching signatures.

If you run open banking APIs, add the FAPI profile to the scope: consent lifecycle, token binding, redirect handling and the consent-revocation path. A consent that keeps working after revocation is both a security finding and a regulatory one.

What a Fintech Penetration Test Costs

Manual engagements for a payment application are commonly quoted between $15,000 and $50,000, and fintech scope pushes toward the upper half: multiple roles, a payment provider integration, webhooks, an admin console and often a mobile client. If your auditor or partner bank requires a human-led test with a named tester, that is the budget line.

The cost that actually hurts, though, is cadence. One engagement a year against a codebase that deploys weekly means roughly fifty untested releases, each of which can touch authorisation on a money-moving endpoint. Continuous automated testing prices differently — Penetrify starts at $100 a month with retests included — and the sane pattern for a regulated fintech is both: continuous coverage underneath, one human engagement a year on top for the signature and the depth.

Do not buy a bigger annual test to solve a cadence problem. It is the most common budgeting mistake in this category, and it leaves the same fifty releases untested.

DDoS and Resilience Testing: What a Pentest Is Not

"DDoS testing" is a frequent fintech search, and it is worth being blunt: it is not part of a penetration test, and Penetrify does not do it. Volumetric attacks are excluded from our scope by design, because generating that load against a production payment system is a reliability event you have to plan with your provider, not a security assessment you run on a Tuesday.

If DORA resilience testing is what you are chasing, the relevant work is different in kind: load and failover testing, capacity planning, provider-level DDoS protection and its configuration, and documented recovery objectives. Your cloud provider and CDN handle the mitigation layer, and testing usually means validating their configuration and your runbooks rather than firing traffic.

What a penetration test does cover is the application-layer denial that no scrubbing service will catch: an unauthenticated endpoint that triggers an expensive report generation, a GraphQL query whose depth multiplies database work, or a rate limit applied per session when the attacker can mint sessions freely. Those are logic flaws, they are in scope, and they take down payment flows more often than packet floods do.

What Partner Banks and Auditors Actually Ask For

Fintech security reviews are rarely about your controls in the abstract. A sponsor bank, a card scheme or an enterprise customer sends a questionnaire and asks for evidence: scope of the last test, methodology, findings by severity, remediation status, retest results, and how quickly a critical is fixed. The report matters less than whether you can show the loop closing.

That is why retest history is worth more than a thicker report. A document listing twelve findings from March tells a reviewer nothing about today; a trail showing each finding closed, verified and not regressed since answers the question they are actually asking. Continuous testing produces that trail as a by-product, which is the underrated reason to run it in a regulated environment.

Two practical notes. Get your auditor to state in writing whether they require a human-led test specifically, because that single answer decides your budget shape. And check whether the questionnaire asks for testing of your third-party integrations: if you rely on a payment provider, its compliance is not yours, but your integration with it is.

DORA: What It Actually Requires, and From Whom

DORA (Regulation (EU) 2022/2554) has applied to EU financial entities since 17 January 2025, and its testing chapter has two distinct tiers that are routinely confused. Articles 24–25 apply broadly: every in-scope financial entity (banks, payment and e-money institutions, investment firms, crypto-asset providers, insurers) must run a digital operational resilience testing programme, testing ICT systems that support critical or important functions at least once a year with risk-appropriate methods, which explicitly include penetration testing and vulnerability scans.

Article 26 is the heavier tier: threat-led penetration testing (TLPT), a full red-team exercise on live production systems, required at least every 3 years but only for entities designated by their competent authority. The regulatory technical standards for TLPT (Delegated Regulation (EU) 2025/1190, aligned with TIBER-EU) have applied since July 2025, so designated entities are now being scheduled for their first cycles.

For most fintechs, the practical DORA question is Article 24–25 compliance: can you demonstrate a testing programme that runs at least annually and covers your critical functions? Continuous AI pentesting answers it structurally: every deployment of your payment API is tested and documented, so the annual-minimum requirement is met by orders of magnitude, and the evidence for your regulator accumulates automatically.

PCI DSS 4.0: Requirement 11.4 in Practice

PCI DSS 4.0 tightened penetration testing from a checkbox to a programme. Requirement 11.4.1 demands a documented methodology based on an industry-accepted approach, covering the application layer and the network layer; 11.4.2 and 11.4.3 require internal and external penetration testing at least every 12 months and after any significant infrastructure or application change. For a fintech shipping weekly, "after significant changes" is the clause that matters: a new payment flow, a new open banking integration, or a changed authentication path each reset the clock.

Continuous testing turns that clause from a scheduling problem into a non-event: every deploy is tested, so every significant change has a corresponding report. Your QSA receives a documented testing history across the assessment period instead of a single engagement report. Note that PCI DSS requires testing by a "qualified internal resource or qualified external third party"; most organizations pair continuous automated coverage with an annual certified engagement, and QSA interpretations vary, so confirm with yours.

Penetrify's AI agent understands application context. It tests transaction flows for race conditions, tests amount fields for manipulation, and checks authorization boundaries across account types. Not just payloads from a CVE database.

Every Penetrify scan produces a timestamped report with severity ratings, exploitation evidence, and remediation guidance. Your QSA gets a documented testing history across the audit period, not a single annual report.

New payment feature? New open banking integration? Test it in staging before it handles real money. Penetrify returns findings in minutes, so your security review doesn't slow your release velocity.

A PCI DSS annual pentest tests your security posture on one day. Penetrify tests it on every deployment. Vulnerabilities introduced between audit cycles are caught and fixed before an attacker finds them, and before your next QSA visit.