Website Hardening for PHP, React and Next.js

Professional audit of IT infrastructure, web applications and cloud environments for discovering, prioritizing and remediating weaknesses before they are exploited. Security is a critical factor for online success, trust and compliance with regulatory requirements.

OWASP Best Practices

CIS Benchmarks

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What we solve

Professional audit of IT infrastructure, web applications and cloud environments for discovering, prioritizing and remediating weaknesses before they are exploited. Security is a critical factor for online success, trust and compliance with regulatory requirements.

  • XSS, SQL/NoSQL Injection, CSRF, SSRF, RCE
  • Weak configurations of Nginx/Apache/PHP-FPM
  • Secrets (.env, tokens, keys)
  • Insufficient HTTP headers and TLS policies
  • Weak roles and access, lack of audit/logs

For whom is the service

PHP applications

Projects on clean PHP or frameworks like Laravel, Symfony and popular CMS (including WordPress).

React SPA/MPA

Client applications with API integrations, token protection and correct CORS policy.

Next.js (SSR/SSG)

Secure API Routes, middleware for rate limiting, strict CSP and cookie/session protection.

What the service includes

  1. 1

    Audit and tests

    • • Review of OWASP ASVS/Top 10 and SANS CWE
    • • Static analysis (PHPStan/Psalm; ESLint/TypeScript checks)
    • • Dependency audit (Composer/npm, lockfile, supply-chain)
    • • Black-box and gray-box testing of critical flows
  2. 2

    Hardening of the server

    • • Ubuntu LTS hardened: minimum packages, automatic updates
    • • UFW/iptables, Fail2ban, SSH keys, no root access, 2FA for panels
    • • Nginx/Apache with ModSecurity CRS, gzip/brotli, A+ TLS (1.2/1.3), HSTS
    • • Isolated users and rights (www-data), secure backups
  3. 3

    Hardening of the application

    • • Sanitization and validation of the input; parameterized requests
    • • Strong HTTP headers: CSP, X-Frame-Options, X-Content-Type-Options
    • • Sessions and cookies: HttpOnly, Secure, SameSite, strict lifecycle
    • • For Next.js: headers() in next.config.js, middleware rate limiting, strict image domains
    • • For PHP: display_errors=Off, expose_php=Off, disabled dangerous functions
  4. 4

    Data, access and monitoring

    • • RBAC/least privilege for the database and infrastructure
    • • Encryption at rest and in transit (TLS, KMS/external vaults)
    • • Centralized logs, alerts and integration with SIEM
    • • Incident plan: runbooks, RTO/RPO, evidence/forensic

Methodology

  1. 1

    Start

    Short interview, scope, access and risk prioritization.

  2. 2

    Analysis

    Combined automated and manual audit of code, configurations and infrastructure.

  3. 3

    Remediation

    Prioritized plan, fixes, PRs, strong configurations and secret rotation.

  4. 4

    Check

    Retests, regression and validation of the production environment without downtime.

  5. 5

    Continuous protection

    Monitoring, alerting and periodic reviews (optional).

What you get

  • Detailed audit report with weight (Risk/Impact/Exploitability)
  • Plan for fixes and recommendations for implementation
  • Hardening checklist (server + application) for future releases
  • Configuration templates (Nginx/Apache, PHP-FPM, Next.js headers)
  • Management and technical application summary
  • Configured monitoring and alerts for critical events
  • Training of the team: secrets, deployment, key rotation
  • Retest and validated report after remediation
  • Optional: Continuous Hardening subscription

Tech specifics by stack

PHP

  • Composer audit, version pinning and secure mirrors
  • PHPStan/Psalm levels, strict type control
  • ini: expose_php=Off, display_errors=Off, restrictions for upload
  • Sessions: cookie_httponly=1, samesite=Strict/Lax

React

  • Auto-escape, but protection at dangerouslySetInnerHTML
  • Isolated tokens, PKCE/OAuth2, secure storage
  • Strict CORS, rate limiting on API, schema validation

Next.js

  • CSP, HSTS, XFO through headers() in next.config.js
  • Middleware protection: bot filtering, rate limiting, IP allow/deny
  • Secrets only on server; protected cookies; restricted image domains

Packages and pricing

Basic

  • Server and configuration review
  • HTTP headers and TLS configuration
  • Audit-summary and quick wins (quick wins)

Professional

  • Full audit (code + infrastructure)
  • Fixes and PRs for critical vulnerabilities
  • Retest and validated report

Enterprise

  • Many servers, HA/clustering, CDN/WAF
  • SIEM integration, runbooks and tabletop exercises
  • Continuous hardening and SLA