The "too small to target" myth
Hackers don't check your LinkedIn employee count. They run automated scanners looking for exposed APIs, misconfigured cloud storage, and unprotected authentication endpoints. A 10-person fintech managing 50,000 user accounts with payment credentials is more attractive than a mid-sized retailer with no financial data. Finance is the second-most breached sector, accounting for 22% of cyberattacks in 2023. In 2025, 72% of banks worldwide were targeted.
For a Nigeria-specific view of why fintechs are targeted, see why Nigerian fintechs are prime targets.
What hackers want from your fintech
A complete "fullz" profile sells for $10-$100 per record. Credit card details run $5-$120. Banking credentials with verified account access can fetch hundreds. Beyond reselling stolen records, attackers use account takeover to initiate fraudulent transfers, drain digital wallets, and abuse payout APIs. For the technical details on the most common API attack vector, see the most dangerous API vulnerability in payment platforms.
9 signals that make your fintech visible
1. Open APIs
No rate limiting or token validation. Attackers probe these systematically.
2. Third-party vendor access
41.8% of fintech breaches originate from vendors with unchecked permissions.
3. Missing MFA
Credential stuffing attacks are automated and low-cost. Without MFA, stolen credentials become direct keys.
4. PII at scale
SSNs, account numbers, and transaction histories create high-value targets.
5. Crypto/real-time payment rails
Direct financial theft without intermediary steps.
6. Rapid growth
More accounts = larger attack surface. Onboarding automation often outpaces security controls.
7. No security hire
Unreviewed configs, default permissions, and undocumented API changes accumulate.
8. Unpatched dependencies
A single outdated library is a usable entry point.
9. Poor offboarding
FinWise Bank was breached because a former employee retained file access.
Not sure how visible your fintech is to attackers?
Get a Threat Exposure AssessmentWhat a breach actually costs a startup
Fintech startups face breach costs of $120K-$1.24M per incident. Roughly 60% of small businesses close within six months of a significant breach. Average detection time in financial services: 197 days. Containment: 69 more days. Damage accumulates for months before you know you're bleeding. Organisations conducting regular penetration testing save an average of $1.9 million per breach compared to those that don't.
Reduce your exposure now
- Enforce MFA across all user and admin accounts
- Audit every active third-party integration and revoke excess permissions
- Review your API authentication layer and confirm rate limiting on every public endpoint
- Rotate overdue credentials
- Treat offboarding as a security event, not an HR formality
A focused API and authentication penetration test for a startup typically costs $5,000-$15,000: far less than the floor of a breach incident. For details on what this testing looks like, see how a Simpa Labs pentest works and our pricing guide.
Your attack surface is a business risk
Would attackers target your fintech? The infrastructure you build this week determines how attractive an answer you give them. Start with the quick wins: MFA, vendor permissions, and API rate limiting. Then schedule external penetration testing as operational intelligence, not a compliance checkbox.
Related reading
Blog: Why Nigerian fintechs are targeted · Top Nigerian vulnerabilities · 10 proven ways to defend your business
Guides: Breach risk assessment · Security checklist · How to book a pentest
Services: Penetration testing · Vulnerability assessment