When I look at an initiative like BlastDoor, I'm struck by how unlikely it is that every other messaging app makes a similar investment on every platform. Does

When I look at an initiative like BlastDoor, I'm struck by how unlikely it is that every other messaging app makes a similar investment on every platform. Does WhatsApp have a similar architecture? Has the Gmail app rewritten all its image parsers in a similar manner? Has Tinder? And sure, if you compromise WhatsApp you only get access to its internal memory and may not be able to escalate to other apps or OS storage - but compromising someone's WhatsApp messages isn't any less serious, and there's history of escalation being possible: https://techcrunch.com/2019/05/13/whatsapp-exploit-let-attackers-install-government-grade-spyware-on-phones/ https://techcrunch.com/2019/05/13/whatsapp-exploit-let-attac... It's a miracle that these kinds of zero-click zero-days don't get announced every single week. Though maybe they do, and we just don't know about them...