Certificate Transparency Log Monitoring
Know the moment a certificate you didn't request is issued for your domain.
Every publicly trusted certificate is logged in public Certificate Transparency logs. This monitor searches them for your domain and its subdomains and reports new certificates by name — a compromised CA, a social-engineered issuance or shadow IT.
What it detects
- New certificates for your domain or any subdomain
- Which names each new certificate covers
- Which log search answered (crt.sh, with CertSpotter as the fallback)
How you're alerted
- “New Certificate Detected” fires on its own — no rule to write.
Notifications go to any of 8 channels — see notifications.
- Runs from
- MonSPHERE's own workers — no region to pick
- First check
- Records a baseline — nothing is flagged until something changes
- Interval
- At most every hour
- Available on
- Free, Professional · Enterprise and Custom on request
More in Security & Domains
View categorySSL Monitoring
Certificate expiry alerts before anything breaks.
WHOIS Monitoring
Track a domain's own registration expiry and catch an unexpected ownership transfer — independent of its SSL certificate.
Subdomain Monitoring
Find your domain's subdomains in Certificate Transparency logs and get alerted on new ones and on dangling CNAMEs that could be taken over.
Typosquatting Monitoring
Find registered lookalikes of your domain — typos, homoglyphs, IDN homographs, other TLDs, "brand-login" names — and get alerted when a new one appears.
Port Discovery
Full-range TCP port scan of a host you own to flag any port that's open now but wasn't before — an early warning for an accidentally-exposed service.
DNS Blacklist Monitoring
Check whether an IP (or a hostname's IP) is listed on spam blacklists — catch a reputation problem before it blocks your mail.
Email Authentication
Watch a domain's SPF, DKIM and DMARC records for the silent misconfiguration that tanks deliverability.
Cookie Monitoring
Track a page's cookies for unexpected additions, removals, or security-attribute changes — Secure, HttpOnly, and SameSite, not just whether a cookie is still there.
Third-Party Script Integrity
Get alerted when a third-party script your page loads changes — an early warning for supply-chain and card-skimming attacks.
Start monitoring everything in minutes
Create a free account, add your first check and get alerted the moment something breaks — no credit card required.