I always wonder if encryption providers have or may start providing back doors to the NSA or other alphabet agency’s US or foreign Download Telegram As Telegram messaging app blocks Islamic State sites, new ones pop up| Reuters Mobile messaging service Telegram is racing to shut down broadcast channels used by Islamic State to promote its causes and recruit members, but the group is creating new channels apparently just as quickly. Berlin-based Telegram, created two years ago by the founder of Russia's most popular social network site Vkontakte, has caught on in many corners of the globe as an ultra-secure way to quickly upload and share videos, texts and voice messages. Two months ago, a new public broadcast feature of Telegram became the preferred method for Islamic State to broadcast news and share videos of military victories or sermons, according to security researchers. The group used Telegram to claim responsibility for the Paris attacks, which left 129 people dead, and the bombing of a Russian airliner over Egypt last month, which killed 224. In a statement published on its site on Wednesday, Telegram said it has been able to identify and block 78 IS-related broadcast channels in 12 languages on its site. "We were disturbed to learn that Telegram's public channels were being used by ISIS to spread their propaganda," it said.