The limitations of the security silo
In many fast-growing Nigerian fintechs, the security team (if one exists) is siloed from the engineering team. Security operates as a gatekeeper at the end of the release cycle, throwing vulnerabilities over the wall while engineers are pressured by product managers to ship features. This adversarial dynamic leads to friction, ignored warnings, and ultimately, breaches.
Shift Left
Security must be moved to the left of the Software Development Life Cycle (SDLC). It should be discussed during requirements gathering and architecture design, not just during final testing.
Shared Responsibility
Engineers must understand that security is not just the CISO's job. Writing secure code is synonymous with writing high-quality code.
Blameless Culture
When an incident occurs, the focus must be on fixing the systemic flaw that allowed the error, not firing the junior developer who wrote the vulnerable line of code.
Establishing a Security Champions program
You cannot hire enough security engineers to review every pull request. The most effective scaling strategy is the Security Champions program.
- Identify the right engineers: Look for senior or mid-level developers who already show an interest in system architecture and edge cases.
- Provide specialized training: Send them to advanced secure coding workshops. Teach them how to identify OWASP Top 10 vulnerabilities in their specific language (e.g., Node.js, Java, Go).
- Empower them in PR reviews: Mandate that critical PRs (like those touching authentication or payments) require an approval from a designated Security Champion.
- Recognize and reward: Acknowledge their dual role during performance reviews and provide them with a clear path for career progression.
Does your engineering team understand how attackers exploit their code?
Book an API Security AssessmentIntegrating security into the sprint
Security tasks cannot be relegated to a backlog that never gets prioritized. They must be treated with the same urgency as feature development.
Threat modeling during planning
Before writing code for a new feature (e.g., a peer-to-peer transfer module), spend 30 minutes asking: "How could an attacker abuse this?" Identify the trust boundaries and document the necessary mitigations as acceptance criteria in the Jira ticket.
Automated security tooling
Implement SAST (Static Application Security Testing) and dependency scanning in your CI/CD pipeline. The key is to fail the build only on high-confidence, critical vulnerabilities. If the tool generates too many false positives, developers will learn to ignore it.
How external pentests validate culture
An annual, independent penetration test is not just for CBN compliance; it is a vital feedback loop for your engineering culture.
A strong culture doesn't mean the pentest finds nothing. It means the findings are primarily complex logic flaws rather than basic, easily preventable errors like SQL injection or hardcoded credentials. It also means the engineering team eagerly consumes the report, asks clarifying questions, and remediates the issues rapidly without pushback.
The CTO sets the tone
If the CTO compromises on security to hit a release deadline, the entire engineering team will internalize that security is optional. Leadership must explicitly authorize developers to push back on product managers if a feature cannot be delivered securely on time.
Related reading
Blog: Why Nigerian Fintechs Are Targeted · 10-Point Security Checklist
Services: Secure Architecture Review
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