KnowraWhatsAppLinked fromLinked fromThe 4 pages that link to WhatsApp, each with the reason it gives.All 4Broader topic 2Compared with 2End-to-end encryptionBroader topic: Its deployment illustrates how end-to-end encryption operates at the scale of a global service.Instant messagingBroader topic: It exemplifies mobile messaging tied to phone numbers and end-to-end encryption.