This is called CNAME cloaking[0] and it’s already happening in the wild[1]. [0]: https://medium.com/nextdns/cname-cloaking-the-dangerous-disguise-of-third-pa

This is called CNAME cloaking[0] and it’s already happening in the wild[1]. [0]: https://medium.com/nextdns/cname-cloaking-the-dangerous-disguise-of-third-party-trackers-195205dc522a [1]: https://9to5mac.com