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Security Guide - API Keys and Sensitive Data Protection

🔒 Protected Files

Your .gitignore files have been updated to protect the following sensitive information:

Environment Variables

  • .env (all variants)
  • .env.local, .env.development, .env.production
  • .env.staging, .env.test

API Keys & Credentials

  • config/keys.js, config/secrets.js
  • config/credentials.json
  • secrets/, keys/, .secrets, .credentials
  • api-keys.json, service-account.json
  • firebase-adminsdk-*.json

Database Credentials

  • database.json, db-config.json
  • mongodb.conf, redis.conf
  • Connection strings and database URLs

SSL Certificates & Private Keys

  • *.pem, *.key, *.crt, *.cert
  • *.p12, *.pfx
  • ssl/, certs/ directories

Authentication Tokens

  • tokens/, .tokens
  • auth-tokens.json, jwt-secret.txt

Cloud Provider Credentials

  • .aws/, aws-config.json
  • .gcloud/, gcloud-service-account.json
  • .azure/, azure-credentials.json

Payment Provider Keys

  • stripe-keys.json, .stripe/
  • paypal-config.json, .paypal/

Third-Party Service Keys

  • sendgrid-api-key.txt
  • twilio-config.json
  • firebase-config.json
  • google-api-credentials.json

🛡️ Current Environment Files Status

Root Directory:

  • ✅ .env - Protected by .gitignore
  • ✅ .env.production - Protected by .gitignore
  • ✅ .env.example - Safe to commit (template only)

Next.js Directory:

  • ✅ .env.local - Protected by .gitignore
  • ✅ .env.example - Safe to commit (template only)

📋 Security Checklist

✅ Completed

  • Updated root .gitignore with comprehensive security patterns
  • Updated Next.js .gitignore with security patterns
  • Protected all environment variable files
  • Protected API keys and credentials
  • Protected database connection strings
  • Protected SSL certificates and private keys
  • Protected authentication tokens
  • Protected cloud provider credentials
  • Protected payment provider keys
  • Protected third-party service keys

🔄 Recommended Next Steps

  1. Verify Git Status

    git status

    Make sure no sensitive files are staged for commit.

  2. Remove Sensitive Files from Git History (if already committed)

    git filter-branch --force --index-filter \
'git rm --cached --ignore-unmatch .env' \
--prune-empty --tag-name-filter cat -- --all

  3. Use Environment Variables for All Secrets

    • Database URLs
    • API keys (Stripe, SendGrid, etc.)
    • JWT secrets
    • OAuth client secrets

  4. Example .env Structure

    # Database
MONGODB_URI=mongodb://localhost:27017/lastmile
REDIS_URL=redis://localhost:6379

# Authentication
JWT_SECRET=your-super-secret-jwt-key
JWT_EXPIRES_IN=7d

# API Keys
STRIPE_SECRET_KEY=sk_test_...
STRIPE_PUBLISHABLE_KEY=pk_test_...
SENDGRID_API_KEY=SG....

# App Configuration
NEXT_PUBLIC_APP_URL=http://localhost:3000
NODE_ENV=development

  5. Secure Production Deployment

    • Use environment variables in your hosting platform
    • Never hardcode secrets in your code
    • Use secrets management services (AWS Secrets Manager, etc.)

🚨 Emergency Response

If you accidentally committed sensitive data:

  1. Immediately rotate all exposed credentials
  2. Remove from git history using the command above
  3. Force push to remote (⚠️ This rewrites history) 
    git push origin --force --all
  4. Update all team members about the security incident

📞 Support

If you need help with security configuration, refer to:

Remember: Security is everyone's responsibility. Always double-check before committing!