What is a subdomain takeover?

Map Of Internet 1973


Subdomain takeover is when we succeed in issuing a certificate for a subdomain that we don't own.

SNI challenge

The most known attack vector was to use the sni challenge on shared hosting.

Due to this flaw, these DNS challenge has been deprecated and removed.



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What is Hosting? (or hosted domains for HTTP, Email, )

Hosting is when the domains of a request are not directly associated with the machine's name. The domains are then called hosted. web hosting is when a web/http server is provided to you. You...
Map Of Internet 1973
What is a Domain Name in DNS ?

The term domain name is a name: in the Domain NameSpace (DNS) that identifies an object (known also as node) in the domain database (ie a DNS database or a local host file) It's also known as...

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