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Cybersecurity Essentials

Protect your applications and user data

Security First Approach

Security isn't optional—it's essential. Learn the fundamentals to protect your users and your business from threats.

🔐 Authentication & Authorization

OAuth 2.0 & OpenID Connect

Industry-standard protocols for secure authentication.

Popular Providers:

Auth0 Clerk Supabase Auth NextAuth.js

JWT Tokens

Stateless authentication with JSON Web Tokens.

Best Practices:

  • • Use short expiration times (15 min)
  • • Implement refresh tokens
  • • Store securely (httpOnly cookies)
  • • Sign with strong secrets

Multi-Factor Authentication (MFA)

Add an extra layer of security beyond passwords.

SMS/Email

Easy but less secure

TOTP Apps

Google Authenticator

WebAuthn

Biometric/hardware

🛡️ Data Protection

Encryption at Rest

Protect stored data from unauthorized access.

  • • Database encryption (AES-256)
  • • Encrypt sensitive fields separately
  • • Secure key management (AWS KMS, Vault)
  • • Never store passwords in plain text

Encryption in Transit

Secure data as it moves across networks.

  • • HTTPS everywhere (TLS 1.3)
  • • Certificate pinning for mobile apps
  • • Secure WebSocket connections (WSS)
  • • VPN for internal services

GDPR & Privacy Compliance

Respect user privacy and comply with regulations.

  • • Cookie consent banners
  • • Data deletion requests
  • • Privacy policy & terms
  • • Data portability

🔎 Common Vulnerabilities (OWASP Top 10)

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SQL Injection

Use parameterized queries or ORMs

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XSS (Cross-Site Scripting)

Sanitize user input, use CSP headers

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CSRF (Cross-Site Request Forgery)

Use CSRF tokens, SameSite cookies

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Broken Authentication

Implement MFA, rate limiting, secure sessions

🛠️ Security Tools & Scanning

Dependency Scanning

  • • npm audit / yarn audit
  • • Snyk
  • • Dependabot
  • • OWASP Dependency-Check

Penetration Testing

  • • OWASP ZAP
  • • Burp Suite
  • • Metasploit
  • • Professional audits

✅ Pre-Launch Security Checklist