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

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

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

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

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