Comment by adamc

4 days ago

Seems like relying on domain alone is a design flaw of OAuth?

OAuth allows you to provide information above and beyond just the domain, and the article describes examples of how this could be done. This is just a flaw in how Google presents an identity to OAuth clients.

In other words, right now it's basically "user@domain", but it could be ("user@domain", "unique workspace ID") which would prevent these sorts of attacks as well as make logical sense.