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First released for iOS on August 14, 2013, and for Android in October 2013, Telegram messenger is a basic instant messaging app. With over 500 million daily users, it is one of the top ten most downloaded applications in the world. Telegram features such as media, groups, and chat are encrypted with a combination of 256-bit symmetric AES encryption algorithm, 2048-bit RSA encryption, and secure Diffie–Hellman key exchange exchange. Telegram has a background of interacting with the. Iranian and Russian governments, especially in different states, makes it an attractive target for nation-states.