What Nigerian payment startups are uniquely exposed to
In the fast-moving Nigerian fintech space, the attack surface is expansive and constantly evolving. Payment startups are heavily targeted by organized cybercrime syndicates leveraging sophisticated methodologies. Standard exposures include SIM swap fraud, OTP interception, concurrent disbursement race conditions, and broken object-level authorisation (BOLA) on merchant-facing APIs. The Flutterwave ₦11 billion breach and Interswitch's ₦30 billion loss from transaction glitches are stark reminders of the consequences of business logic vulnerabilities that standard automated scans simply never surface.
Most critical vulnerabilities live directly in business logic: partial authorisations, reversal interactions with wallet balances, admin endpoints with weak role checks, and improper handling of third-party callback webhooks. Furthermore, the CBN Baseline Standards 2026 mandate stricter requirements, adding biometric verification, real-time transaction monitoring, and enhanced due diligence. To understand the depth of these requirements, see our comprehensive CBN compliance guide. For a primer on the most common API vulnerability in this space, dive into our technical breakdown of BOLA in payment platforms.
Criteria that matter when choosing a security partner
Scope tailored to Nigerian business logic
Any serious penetration test for a Nigerian payment app must comprehensively cover payment flows (initiation, reversal, partial transactions), authentication chains (OTP bypass, session fixation, token reuse), API boundary enforcement (rate limiting, BOLA/IDOR), and admin tool access controls. Testing must mimic real-world local threats, including USSD session interception and agent network vulnerabilities. A generic "web app scan" is not a penetration test.
Deliverables built for multiple audiences
A report is useless if developers can't understand the fixes and auditors can't verify the compliance. Deliverables must include per-finding severity ratings, clear proof-of-exploitability, business impact framing, and merge-ready remediation guidance. The structure should directly map to the requirements of CBN examiners, NDPC audits, and PCI DSS auditors. Investors demanding due diligence require a clear executive summary that translates technical risk into business risk.
Remediation and retesting commitment
A true security partner walks your engineering team through findings, answers developer questions directly, and actively retests after fixes are implemented. Any vendor who delivers a PDF report, invoices you, and disappears is simply a vendor, not a partner. Your goal is a secure application, not just a document highlighting its flaws.
How Simpa Labs' methodology maps to payment apps
We utilize a Grey-box approach as our standard. Every engagement begins with a 30-45 minute scoping call to meticulously map your architecture, user roles, third-party integrations (Paystack, Flutterwave, NIBSS, BVN/NIN providers), and specific compliance requirements. Testing immediately focuses on where the highest risk resides: authenticated flows, session management, and complex business logic.
In our assessments, we consistently find that automated tools miss up to 80% of critical logic flaws. Our reports are therefore structured for three distinct audiences: engineering (providing merge-ready fixes and code-level context), compliance (formatted for CBN/PCI DSS/NDPA review), and investors (providing clear business impact framing). Engagements typically run 5-10 business days, with retesting inherently included in the package. See how a Simpa Labs pentest works for a complete walkthrough of our methodology.
Ready to scope a penetration test tailored for your payment startup?
Book a Scoping CallQuestions to ask before you commit to a vendor
Before signing an engagement letter with any cybersecurity provider, ask these pointed questions:
- What specific user roles, APIs, and third-party integration points are explicitly in scope?
- Is retesting included after fixes are deployed, and how many cycles are covered?
- How is the final report structured to satisfy CBN examiners or PCI DSS reviewers?
- Who actually conducts the manual testing: the senior engineer on the scoping call, or a junior outsourced team?
- What does remediation support look like after the initial report is delivered?
- Do you test specifically for Nigerian mobile fraud vectors like SIM swap and USSD bypass?
Vague answers to any of these questions are a red flag worth taking seriously. For more guidance on vetting any provider, review our choosing a pentest company guide.
Judge them on specificity, not sales materials
A partner who deeply understands Nigerian fintech business logic, produces reports your compliance and engineering teams can actually use, and stays engaged through the remediation process will demonstrate that expertise in the very first conversation. Book a scoping call with us, ask the hard questions above, and judge us on the depth, transparency, and specificity of our answers.
Frequently asked questions
How does Simpa Labs' approach differ from automated vulnerability scanners?
Automated scanners miss business logic vulnerabilities like race conditions in disbursements, partial authorization manipulation, and broken object-level authorization (BOLA) in merchant APIs. Our engineers manually test these critical pathways tailored specifically to Nigerian payment architectures, ensuring findings that a generic scanner would simply ignore.
Will the Simpa Labs penetration test report satisfy CBN examiners?
Yes. Our reports are explicitly formatted to meet the Central Bank of Nigeria's (CBN) Risk-Based Cybersecurity Framework requirements, including per-finding severity ratings, detailed proof-of-exploitability, and remediation guidance structured for compliance reviewers and PCI DSS auditors.
Do you offer retesting after we fix the identified vulnerabilities?
Absolutely. A security testing engagement is incomplete without validation. We walk your team through the findings, answer engineering questions, and perform comprehensive retesting after your team implements fixes. We partner with you until the issues are resolved.
Related reading
Blog: How a Simpa Labs pentest works · Penetration testing in Nigeria · Security audit before launch · Why Nigerian fintechs are targeted
Guides: How to book a pentest · Pricing guide · Certifications · Breach risk assessment
Services: Penetration testing · Secure architecture review · For payment gateways and mobile money