The Zero Day Expert in WhatsApp

This exchange bug is the textbook definition of a zero day vulnerability. We're pretty sure it's being actually no, sorry, Alison. I need to crack myself. The code base in the legacy self hosted product is not the same as the code base driving the cloud based at new variants. So we don't know all the details. It is entirely possible that it literally isn't in the other ones. And even if it is, then it's still someone else's problem to stick the effect of the firewall rules in front of it.