Skip to main content
SecScannerSecScanner
Security ChecksFree ToolsPricingBlog
Get Started
Sign InGet Started

Security Blog

Stay up to date with the latest security best practices, tips, and insights to keep your website protected.

Free Security Scan

Check your website for vulnerabilities with 62 automated security checks.

Scan Your Website

No signup required

Product

  • Security Checks
  • Free Tools
  • SSL Checker
  • Vulnerability Scanner
  • Email Security
  • Pricing
  • Compliance
  • Security Reports

Popular Checks

  • CSP Check
  • HSTS Check
  • TLS Version Check
  • SSL Expiry Check
  • SPF/DKIM/DMARC Check
  • Cookie Security Check
  • JS Vulnerability Scan
  • OCSP Stapling Check

Resources

  • Blog
  • Glossary
  • Mozilla Observatory Alternative
  • ImmuniWeb Alternative
  • Contact

Legal

  • Terms of Use
  • Privacy Policy
  • Refund Policy
  • Cookie Policy

© 2025-2026 SecScanner. All rights reserved.

AllTLSHeadersDNSGeneral
CAA DNS Records: Control Who Can Issue Certificates for Your Domain
DNS8 min read

CAA DNS Records: Control Who Can Issue Certificates for Your Domain

CAA DNS records specify which CAs can issue TLS certificates for your domain. Prevent unauthorized certificate issuance and strengthen PKI.

February 2, 2026Read more →
MTA-STS: Enforce TLS Encryption for Your Domain's Email
DNS9 min read

MTA-STS: Enforce TLS Encryption for Your Domain's Email

MTA-STS prevents email downgrade attacks by requiring TLS for mail delivery. Learn how to implement MTA-STS and protect email from interception.

January 28, 2026Read more →
Subdomain Takeover: Detection, Prevention, and Remediation
DNS10 min read

Subdomain Takeover: Detection, Prevention, and Remediation

Learn how attackers exploit dangling DNS records to hijack your subdomains. Understand the risks, discover vulnerable patterns, and implement monitoring to protect your brand.

January 25, 2025Read more →
Email Security with SPF, DKIM, and DMARC: A Complete Guide
DNS9 min read

Email Security with SPF, DKIM, and DMARC: A Complete Guide

Protect your domain from email spoofing with SPF, DKIM, and DMARC. Learn the correct syntax, deployment strategies, and how these protocols work together.

January 1, 2025Read more →