Security Blog
Web Security Guides
Practical guides on SSL, headers, CSP, DNS, and more, for developers and agencies.
HTTP Redirect Security: Preventing Open Redirects and Hijacked Redirect Chains
Open redirects let attackers use your domain as a launchpad for phishing. Learn how to validate redirect destinations, fix HTTP-to-HTTPS redirect issues, and keep your redirect chains clean.
WordPress Security Hardening: 10 Configuration Fixes to Do This Week
Most WordPress security problems come from a handful of preventable misconfigurations. Here are 10 specific fixes, from hiding your WP version to locking down wp-login, with exact code for each.
How to Stop Email Spoofing: SPF, DKIM, and DMARC Explained
Email spoofing lets attackers send emails pretending to be your domain. Learn how SPF, DKIM, and DMARC work together to block spoofing, and how to fix the gaps on your own domain.
Subresource Integrity (SRI): Protect Your Site from CDN Compromises
SRI verifies that files loaded from CDNs haven't been tampered with. Learn how subresource integrity works, how to implement it, and when you need it.
CORS Misconfiguration: The Security Risks of Wildcard Origins
Misconfigured CORS headers can expose your API and user data to attackers. Learn common CORS mistakes, how to test for them, and how to configure CORS securely.
Mixed Content Errors: How to Find and Fix Them
Mixed content warnings happen when HTTPS pages load HTTP resources. Learn how to find mixed content, fix it, and prevent it from coming back.
DNS Security Best Practices: DNSSEC, CAA Records, and More
DNS is the foundation of every website. Learn how to secure it with DNSSEC, CAA records, and proper DNS configuration to prevent hijacking and spoofing attacks.
X-Frame-Options vs CSP frame-ancestors: Which Should You Use?
Both X-Frame-Options and CSP frame-ancestors prevent clickjacking, but they work differently. Learn which to use, browser support, and migration tips.
Cookie Security: SameSite, Secure, and HttpOnly Flags Explained
Learn how to properly secure your website cookies with the SameSite, Secure, and HttpOnly attributes. Prevent XSS, CSRF, and session hijacking attacks.
HTTP vs HTTPS: Why SSL Certificates Matter for SEO in 2026
Google uses HTTPS as a ranking signal. Learn how SSL certificates affect your SEO, how to migrate from HTTP, and common HTTPS pitfalls that hurt rankings.
Why Your Website Gets an F Security Grade (And How to Fix It)
Getting an F on your website security scan? Here are the most common reasons and step-by-step instructions to improve your grade to an A.
How to Scan Your Website for Security Vulnerabilities (Free)
Learn how to scan your website for security vulnerabilities for free. Check SSL, security headers, cookies, DNS configuration, and server misconfigurations with one click.
Stay sharp
New guide every week
Sign up to get security guides and scan tips straight to your inbox.