Signal is common in Western governments, particularly the more sensitive and diligent parts. If you work with government people, and I do, that tends to be the

Signal is common in Western governments, particularly the more sensitive and diligent parts. If you work with government people, and I do, that tends to be the messaging app of choice and sometimes policy. WhatsApp also tends to be commonly used in Europe for official government things despite being forbidden for such purposes, but that isn’t seriously enforced. If you wanted an intelligence backdoor into the entire European political apparatus, WhatsApp is the way to do it. Colloquially and by inference, Signal seems to be considered the most secure common messaging app in governments, though this doesn’t mean it is actually true. I’ve used a lot of messaging apps around the world but never had a need to install Telegram. I know it is used in Eastern Europe but I never had a need to install it even when I was there. I’m just a user but my messaging footprint is more global than most.