Diyarbakır Web Security: A Complete Guide for SMEs
Most SMEs in Diyarbakır skip basic security controls on their websites. Yet with HSTS, CSP and properly configured cookie flags, your site hardens measurably within hours. In this guide we share the most common mistakes we see in local businesses and the concrete fixes.
Core Security Headers: HSTS, CSP, X-Frame-Options
HTTP security headers tell browsers how to interpret your site and stop many attacks at the user layer. Strict-Transport-Security (HSTS) redirects all HTTP requests to HTTPS automatically; Content-Security-Policy (CSP) blocks XSS attacks; X-Frame-Options prevents clickjacking.
The most common gap we see on Diyarbakır clients is CSP being either unset or fully disabled with 'unsafe-inline'. Mozilla Observatory or the free VefaSec Site Security Scanner tells you in 30 seconds where you stand against the A+ level.
SSL and TLS Configuration
TLS 1.0 and 1.1 are now considered broken; TLS 1.2 is the minimum, TLS 1.3 preferred. With free CAs like Let's Encrypt you can deploy 90-day auto-renewing certificates. Modern AEAD cipher suites such as AES-GCM and ChaCha20-Poly1305 should be enabled and weak ciphers disabled.
Is OCSP stapling enabled? Are you on the HSTS preload list? Do you monitor certificate transparency logs? These three checks are missing from most panels and remain the third incomplete layer of enterprise defense.
Cookie Security and Session Management
Every cookie should carry Secure, HttpOnly and SameSite=Strict flags by default. SameSite=Lax is preferred only when cross-site navigation scenarios demand it; Strict maximizes safety. Short-lived session tokens, rotating refresh tokens and server-side invalidation on logout are critical.
The most common mistake on WordPress sites is plugin-generated cookies being added without enforcing these flags. A WAF or Cloudflare Page Rule can enforce cookie flags at the application boundary.
WordPress and Common CMS Vulnerabilities
WordPress is the attackers' first target because it is the world's most popular CMS. Restricting wp-admin to your office IP, renaming the 'admin' user, adding two-factor authentication and updating plugins weekly are the basic defenses.
One of our Diyarbakır clients leaked their customer database via SQL injection caused by an outdated SEO plugin. The combination of automatic updates, a WAF and monthly vulnerability scans almost entirely prevents this kind of incident.
Free Audit Template and Next Steps
Start with VefaSec's free tools: check your header score with the Site Security Scanner, your certificate chain with SSL Check and your SPF/DKIM/DMARC records with the DNS Email Security tool. Archive results as PDF and add them to your quarterly audit records.
For a professional audit, contact the Diyarbakır VefaSec team; we set up an end-to-end security process with on-site or remote pentest, reporting and retest. KVKK-compliant reporting and staff awareness training are included.
Talk to VefaSec about your project or audit needs.
Our Diyarbakır-based team delivers end-to-end software development, penetration testing and cybersecurity advisory to enterprise clients. The discovery call is free and non-binding.