https://gadgets.ndtv.com/apps/news/indian-army-sai-whatsapp-messaging-app-secure-application-internet-2317894Indian Army has developed and launched a secure messaging platform and has named it Secure Application for Internet (SAI).
This app is very similar to general messaging applications like WhatsApp and Telegram and uses the end-to-end encryption messaging system.
SAI has now been vetted by a CERT auditor and the Army Cyber Group and the process for filing Intellectual Property Rights (IPR) is currently underway.