DomainGuard monitoring
Subdomain discovery
DomainGuard finds the subdomains anyone can find under your domain, adds new ones to its watch, and tells you when one appears.
What it does
We read public certificate logs for every name ever issued a certificate under your domain, and look up about 50 common names in DNS. Hosts that resolve are watched like the domain itself.
How it helps you
Forgotten staging sites and old portals keep running long after anyone remembers them, and attackers read the same logs we do. A subdomain pointing at a service you cancelled can be taken over and used for phishing under your name.
How it works
- Passive: it never sends traffic to the hosts it finds.
- Up to 100 hosts per domain are kept and watched.
- A New subdomain alert when one appears.
What each plan gets
- Free
- Discovery when you scan
- Starter and up
- Rediscovered with every daily scan, with alerts