How I Able To Takeover 10 Subdomains In A Private Program ?

Program : Private Program

Vulnerability : Subdomain Takeover

Subdomain : 10 Subdomins

Bounty : 500$

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I was able to takeover 10 subdomains by ( Fastly Service ) due to the domain was not used on Fastly account

when I tried to visit some subdomains

it was show me this message

This message mean it Possible to

Takeover The domain By Fastly.

So I tried to add the domain to my fastly account and it was allowed to added

so this mean I've takeover the domainand every subdomain show the message above is takeover too .

10 subdomains were shown the same message !

so This was what i do .

You can see my blog about

how to takeover by Fastly to Know what I mean.

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