DNS/hijacking/事例/periscope.tvについて、ここに記述してください。

https://hackerone.com/reports/531890

Subdomain takeover on dev-admin.periscope.tv

State   Resolved (Closed)
Disclosed       May 29, 2019 3:00am +0900
Reported To     Twitter
Asset   *.periscope.tv (Domain)
Weakness        Privilege Escalation

Subdomain takeover on dev-admin.periscope.tv
Subdomain takeover on dev-admin.periscope.tv/index.html

http://dev-admin.periscope.tv.s3-website-us-west-2.amazonaws.com/index.html