API Security Hardening
Secure Your APIs Against Modern Attack Vectors
APIs are the backbone of modern digital products โ and increasingly the primary target for attackers. Our API security hardening service reviews, tests, and fortifies your REST, GraphQL, and third-party integrations against injection attacks, broken authentication, data exposure, and rate abuse โ ensuring your integrations are resilient, compliant, and trustworthy.
What's Included
Everything you need โ nothing you don't. Every engagement is scoped and delivered with precision.
API Security Reviews
Thorough review of all API endpoints for OWASP API Security Top 10 risks โ broken object-level auth, mass assignment, security misconfiguration, and more.
Authentication & Authorisation Audits
Review and hardening of JWT tokens, OAuth 2.0 flows, API key management, and role-based access control implementations.
Rate Limiting & Throttling
Implementation of intelligent rate limiting, request throttling, and API abuse prevention to block brute-force and scraping attacks.
API Gateway Security
Configuration and hardening of API gateways (Kong, AWS API Gateway, Nginx) with WAF rules, IP whitelisting, and traffic inspection.
Secure Data Transmission
TLS 1.3 enforcement, certificate pinning, payload encryption, and sensitive data masking in API responses.
Third-Party Integration Security
Security review of M-Pesa, payment gateway, OAuth provider, and webhook integrations for token leakage and injection risks.
What You Receive
- API security assessment report
- OWASP API Top 10 findings
- Authentication hardening guide
- Rate limiting configuration
- API gateway security rules
- TLS & encryption audit
- Webhook security hardening
- OAuth / JWT remediation
- Developer security playbook
- Re-test after remediation
Technology Stack
Technology-agnostic:We recommend the best stack for your specific requirements, not what's easiest for us.
Our Process
A transparent, milestone-driven process that keeps you in control from first brief to final launch.
API Inventory & Scoping
Authentication Review
Endpoint Security Testing
Integration Security Review
Hardening Implementation
Re-test & Sign-off
Common Use Cases
See how businesses across different sectors are using this service.
Mobile App Backend APIs
Android and iOS app backends secured against MITM attacks, token theft, and privilege escalation.
Payment API Integrations
M-Pesa, Stripe, and Flutterwave integrations hardened against callback forgery and replay attacks.
Healthcare Data APIs
EMR and patient data APIs secured for HIPAA-aligned data access control and audit logging.
Open Banking APIs
Financial service APIs hardened for PCI-DSS compliance, fraud prevention, and secure data sharing.
Third-Party Webhook Security
Incoming webhook endpoints protected with signature verification, replay prevention, and IP filtering.
SaaS Multi-Tenant APIs
Tenant isolation hardening to prevent cross-tenant data access and privilege escalation.
Frequently Asked Questions
Common questions about our API Security Hardening service.
It's the process of reviewing your APIs for vulnerabilities and implementing technical controls โ rate limiting, secure auth, encryption, and gateway rules โ to significantly reduce the risk of a breach through your API layer.
Ready to Start Your API Security Hardening Project?
Get a free consultation and detailed project quote within 24 hours. No obligation, no sales pressure โ just expert advice.