Why Security Must Be Built In, Not Bolted On

Security vulnerabilities in web applications cost businesses billions of dollars annually. The OWASP Top 10 represents the most critical security risks, and understanding them is essential for every developer.

1. Broken Access Control

This is now the #1 vulnerability. Always validate permissions server-side, never trust client-side restrictions.

// Laravel: Always use policies\n$this->authorize('update', $post);\n

2. SQL Injection

Use parameterised queries exclusively. Never interpolate user input into SQL strings.

// WRONG:\nDB::select("SELECT * FROM users WHERE id = {$id}");\n// CORRECT:\nDB::select("SELECT * FROM users WHERE id = ?", [$id]);\n

3. Cross-Site Scripting (XSS)

Always escape output. In Blade: use {{ }} not {!! !!} unless you explicitly trust the source.

Security Headers Checklist

Content-Security-Policy (CSP)
X-Frame-Options: DENY
X-Content-Type-Options: nosniff
Strict-Transport-Security (HSTS)
Referrer-Policy: strict-origin-when-cross-origin

مراحل انجام کار

1

Create Dockerfile

Create a multi-stage Dockerfile that builds your Laravel application and produces a lean production image.
2

Configure GitHub Actions

Add a .github/workflows/deploy.yml file that triggers on push to main, builds the Docker image, and deploys it.
3

Set Up Blue-Green Environments

Provision two identical server environments and configure your load balancer to switch between them.
4

Configure Health Checks

Implement a /health endpoint in your Laravel application that verifies database, cache, and queue connectivity.
5

Test the Rollback Procedure

Always test that you can roll back to the previous version in under 60 seconds before enabling the pipeline.

10 Common WebApp Vulnerabilities and How to Harden Against Them