The Israeli intelligence firm Intsights has breached a Telegram ISIS group, members shared info on US bases in Kuwait, Bahrain, Saudi Arabia. The company conducted HUMINT operations by infiltrating the Telegram Groups managed by the IS. Hackers accessed Telegram accounts in Iran and a security duo investigated the security breach, they will present its findings at the Black Hat Conference. The group is used by Islamic State members who in turn introduce fellow IS militants to members of the group. According to the company, the call to organize an attack in Normandy was issued via the Telegram group a few months ago.”]
Source: https://securityaffairs.co/wordpress/49983/breaking-news/telegram-group.html