Secure Software Development: The 2025 DevSecOps Guide

Security can't be bolted on at the end—it must be built in from the start. As Rishikesh Baidya, our CTO, emphasizes: "Every vulnerability we prevent during development saves 10x the cost of fixing it in production." At Softechinfra, we've embedded security into every phase of our development process.

Security by Design Principles

The Secure SDLC

Security must be integrated into every phase of development:

Phase 1: Security Requirements

Phase 2: Secure Design

Security architecture checklist:

• Authentication design (OAuth, JWT, session management)
• Authorization model (RBAC, ABAC, or policy-based)
• Data protection (encryption at rest and in transit)
• Network security (segmentation, firewalls, TLS)
• Audit logging (what to log, retention, tamper-proof)

OWASP Top 10 Protections

Input Validation Best Practices

// ❌ Vulnerable to SQL injection
const query = SELECT * FROM users WHERE id = ${userId}
// ✅ Parameterized query prevents injection
const query = 'SELECT * FROM users WHERE id = ?'
const result = await db.query(query, [userId])
// ✅ Input validation with Zod
const userSchema = z.object({
  email: z.string().email(),
  age: z.number().min(18).max(120),
  role: z.enum(['user', 'admin'])
})

Security Testing Tools

SAST (Static Analysis)

CI/CD Security Integration

# GitHub Actions security pipeline
name: Security Checks
on: [push, pull_request]
jobs:
  security:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      # SAST - Static analysis
      - name: Run Snyk Code
        uses: snyk/actions/node@master
        with:
          command: code test
      # Dependency scanning
      - name: Check dependencies
        run: npm audit --audit-level=high
      # Secret detection
      - name: Gitleaks
        uses: gitleaks/gitleaks-action@v2

DAST (Dynamic Analysis)

For runtime vulnerability detection, use tools like OWASP ZAP or Burp Suite against running applications. Projects like Radiant Finance require rigorous DAST testing given their financial transaction handling.

Infrastructure Security

Container Security Checklist

• Use minimal base images (distroless or Alpine)
• Run as non-root user
• Read-only filesystem where possible
• Scan images for vulnerabilities in CI/CD
• Sign and verify images

Secret Management

Secret management hierarchy:

Environment Variables (dev)
    ↓
Secret Manager (staging/prod)
    ↓
Hardware Security Module (high-security)

Security Culture

Building secure software requires security-aware teams: