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security

How to Use SSHFP Records in DNS to Verify SSH Host Keys and Prevent Man-in-the-Middle Attacks

SSHFP (SSH Fingerprint) records in DNS let clients automatically verify SSH host keys before connecting, blocking man-in-the-middle attacks. This article explains how to generate and publish SSHFP records, configure clients to verify them automatically, and why combining SSHFP with DNSSEC provides strong security for remote server access.

Jul 16, 2026 1 views

security

How to Use DANE (DNS-Based Authentication of Named Entities) to Secure Email and TLS Without Relying on Certificate Authorities

Learn how DANE (DNS-Based Authentication of Named Entities) can secure email and TLS connections without relying entirely on certificate authorities. This guide explains DANE’s mechanics, practical implementation steps for SMTP and HTTPS, and tips to reduce CA-related risk using DNSSEC-protected TLSA records.

Jul 13, 2026 5 views

security

MTA-STS and TLS-RPT: How to Enforce Secure Email Delivery with DNS Records

MTA-STS and TLS-RPT are two DNS-based email security standards that enforce encrypted delivery and provide failure reports. This guide explains how to set them up with practical steps, policy examples, and actionable tips to protect your domain from email interception.

Jul 10, 2026 11 views

brand-protection

How to Implement BIMI (Brand Indicators for Message Identification) to Boost Email Trust and Brand Visibility

BIMI (Brand Indicators for Message Identification) puts your brand logo right next to your emails in supported inboxes, boosting trust and click-through rates. This guide walks you through implementation prerequisites, DNS setup, and practical tips to get your logo approved and live.

Jun 28, 2026 33 views

security

How to Perform a Domain Security Audit in 2026: Step-by-Step Guide

Domain security audits are essential in 2026 to protect your online identity from hijacking, phishing, and configuration drift. This step-by-step guide covers checking WHOIS records, DNS settings, SSL certificates, email security, and more using practical examples and free tools from Whose.Domains.

Jun 13, 2026 75 views

security

Understanding SSL Certificate Revocation: CRLs, OCSP, and How to Verify in 2026

SSL certificate revocation is a critical but often overlooked aspect of website security. This article explains how Certificate Revocation Lists (CRLs) and the Online Certificate Status Protocol (OCSP) work, covers modern advancements like OCSP stapling and Must-Staple, and provides actionable steps to verify revocation status in 2026 using free tools and command-line checks.

Jun 7, 2026 151 views

security

How to Use SSL/TLS Certificate Transparency Logs to Detect Phishing Domains

Certificate Transparency logs provide a powerful, publicly accessible record of all SSL/TLS certificates issued for domains. By monitoring these logs, you can detect phishing domains that impersonate your brand with lookalike certificates, often issued within minutes of registration. This guide explains how to query CT logs, spot suspicious certificates, and integrate this intelligence into your security routine—with practical tips and real-world examples.

Jun 4, 2026 101 views

security

How to Use DNS Over HTTPS (DoH) to Improve Privacy and Security

DNS queries are often transmitted unencrypted, leaving your browsing habits exposed. DNS Over HTTPS (DoH) encrypts those queries to enhance privacy and prevent tampering. This guide explains how DoH works, how to enable it in your browser and operating system, and how to verify it's working using tools like the Whose.Domains DNS Analyzer.

May 31, 2026 94 views

domain-tools

Reverse WHOIS Lookup: How to Discover All Domains Registered by the Same Owner

Reverse WHOIS lookup lets you find every domain registered to the same person or organization, revealing hidden connections between websites. This guide explains how reverse WHOIS works, real-world use cases for cybersecurity and competitor research, and actionable tips to get the most out of it. You’ll also learn how to use simple tools like WHOIS Lookup to start your own reverse WHOIS investigations.

May 28, 2026 99 views

security

How to Protect Your Domain from Hijacking: Prevention Tips and Recovery Steps

Domain hijacking can cripple your online presence, from lost email to stolen traffic. This guide covers proactive prevention tips—like enabling registrar lock and two-factor authentication—plus actionable recovery steps if your domain is taken. Learn how to safeguard your digital assets before it's too late.

May 25, 2026 83 views

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