Domain Security Blog

Five pillars. One risk score. Practical guides on uptime, certificates, domain intelligence, digital risk, and the eight-dimension risk score from the GuardHound team.

Anatomy of a Lookalike Domain Attack: From Registration to $186,000 Wire Transfer

April 19, 2026 • 12 min read

Twelve days. Three detection windows. One wire transfer no one was watching. Walk a real lookalike-domain campaign through registration, certificate issuance, MX configuration, and invoice fraud — and see exactly when digital-risk monitoring on the brand pillar would have stopped it.

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Catching Rogue Certificates Before They Hurt You: A Practical Guide to CT Log Monitoring

April 19, 2026 • 11 min read

Certificate Transparency turned the global TLS ecosystem into a queryable public record — about 40 million new certificates a day. Here is what CT actually shows you, the four patterns worth alerting on, and how CAA + CT close the loop on the certificates pillar of the eight-dimension risk score.

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Why Uptime Monitoring Belongs Inside Your Domain Security Stack

April 19, 2026 • 9 min read

For a decade, "uptime" lived in one tool and "security" lived in another. That split made sense when outages meant servers crashing — not anymore. Here is why service monitors (HTTP, keyword, ping, port, DNS, SSL handshake) are the first pillar of a modern security score, not a separate product.

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How a Domain Hijack Happens in 3 Steps

March 21, 2026 • 12 min read

It took 72 hours for a small business to lose their domain — and three months to get it back. Walk through a real-world domain hijacking scenario step by step: reconnaissance, takeover, and exploitation. Learn the warning signs and how to protect your domain before it's too late.

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The Cost of an Expired SSL Certificate: A Small Business Horror Story

March 21, 2026 • 10 min read

A small e-commerce site's SSL expires on a Saturday night. No one notices until Monday. $18,400 in lost sales, weeks of SEO recovery, and a customer trust crisis — all because of a certificate that costs $0 to renew. Here's what happened and how to make sure it never happens to you.

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5 Domain Security Mistakes Every Small Business Makes

March 21, 2026 • 11 min read

We scan thousands of domains every month and see the same five mistakes over and over: unmonitored SSL, missing DMARC, no lookalike domain protection, weak registrar security, and unchecked breach exposure. Each one takes less than an hour to fix.

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