Certificate Transparency Log Monitor
Track new SSL/TLS certificates issued globally via public CT logs. Detect rogue certificate issuance for your domains before attackers can exploit them.
What is Certificate Transparency?
Certificate Transparency (CT) is an open framework that requires all publicly-trusted Certificate Authorities to log every SSL/TLS certificate they issue to publicly-auditable, append-only logs.
This means that if a CA mis-issues a certificate for your domain — whether through a compromise, social engineering, or error — you can detect it within hours, not months.
Google Chrome, Firefox, and Safari all require valid CT proofs (Signed Certificate Timestamps) before trusting a certificate.
Know immediately if any CA issues a certificate for your domain without your authorization.
CT logs are cryptographically verifiable and publicly accessible — anyone can audit them.
Since 2018, Chrome requires all new certificates to appear in CT logs or they won't be trusted.
Get notified of suspicious certificate issuance before attackers can use them against your users.
What CT Log Entries Look Like
(illustrative example)
| Domain | Issuer | Type | Issued | Valid For |
|---|---|---|---|---|
*.cloudflare.com | Let's Encrypt | Wildcard | 2m ago | 90 days |
api.stripe.com | DigiCert | DV | 7m ago | 365 days |
*.github.com | Sectigo | Wildcard | 12m ago | 365 days |
login.example-corp.io | ZeroSSL | DV | 18m ago | 90 days |
secure.bankservice.net | GlobalSign | OV | 24m ago | 365 days |
checkout.shopplatform.com | Let's Encrypt | DV | 31m ago | 90 days |
api.saas-vendor.io | DigiCert | EV | 38m ago | 365 days |
*.internal-tools.dev | ZeroSSL | Wildcard | 44m ago | 90 days |
auth.fintech-platform.com | Comodo | DV | 52m ago | 90 days |
staging.bigcorp-api.net | Let's Encrypt | DV | 1h ago | 90 days |
Example data for illustration — not a live feed. Real-time CT monitoring for your own domains is available via CertNotify alerts.
Monitor CT Logs for Your Domains
Get alerted whenever a new certificate is issued for any of your domains — catch rogue issuance instantly.