APIs are one of the most common attack surfaces in modern applications. Weak authentication, poor access control, or insecure data handling can expose sensitive business and user data within minutes. High-security REST APIs require more than basic token auth, they demand defense-in-depth, strict permissions, secure data flows, and continuous monitoring. We design and build high-security REST APIs using Django REST Framework or FastAPI, tailored for applications where security is non-negotiable.
Common API Security Risks
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Broken authentication and session handling
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Overexposed endpoints and data leakage
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Insecure role and permission checks
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Lack of audit trails and monitoring
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Vulnerability to brute force, injection, or replay attacks
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Poor handling of sensitive data (PII, credentials)
Our Secure API Development Approach
We apply layered security controls across the entire API lifecycle.
Authentication & Identity
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JWT with short-lived access tokens
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Refresh token rotation
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OAuth2 and SSO integrations
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Service-to-service authentication
Authorization & Access Control
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Role-based and permission-based access
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Object-level authorization
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Least-privilege access enforcement
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Approval-based workflows for sensitive actions
Data Protection
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Encryption in transit (TLS)
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Secure handling of secrets and credentials
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Field-level data masking
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Secure file uploads and downloads
What We Implement
API Hardening
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Input validation and sanitization
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Strict request schemas
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Rate limiting and throttling
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IP allow/block lists
Secure Coding Practices
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Protection against SQL injection and XSS
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CSRF protection where applicable
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Safe error handling (no data leaks)
Auditing & Monitoring
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Audit logs for sensitive actions
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Security event tracking
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Alerts for abnormal behavior
Key Features
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Secure REST APIs with DRF or FastAPI
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Strong authentication and authorization
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Data encryption and masking
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Rate limiting and abuse prevention
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Audit logs and monitoring
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Compliance-ready architecture
Business Benefits
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Reduced risk of data breaches
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Increased trust from users and partners
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Strong compliance posture
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Secure integrations with third parties
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Peace of mind for security-conscious teams
Why Choose PySquad
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Strong security-first API engineering mindset
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Experience with sensitive and regulated systems
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Practical, not theoretical security implementations
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Clear documentation and security reviews
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Long-term support and security updates
Call to Action
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Request an API Security Audit
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Get a Secure API Architecture Plan
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Ask About Authentication & Permissions Design
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Book a Security Consultation