alt Hacker NewsI've seen people in healthcare send patient data through whatsapp to other doctors in the same hospital.
It was not allowed and they had reliable corporate tools to exchange patient data, but the UX probably felt so cumbersome they'd rather face legal risks than doing it the right way.
It doesn't make it any less worse, but that was my takeaway from the Signal scandal. Of course more secure channels exist, but I'm sure the UX sucked big time!