CodeIgniter Security Best Practices — a practical guide to CodeIgniter security with clear examples you can reuse in real projects.
CodeIgniter Tutorial Series (72/74). Prefer one article? Read the complete CodeIgniter tutorial.
Short description
Security is layered: validate input, escape output, hash passwords, use HTTPS, protect uploads, and keep dependencies updated.
Security checklist
- CSRF on state-changing requests
- esc() all output
- password_hash / password_verify
- Validate uploads
- Least-privilege DB user
- Secrets only in .env