Private messaging - the dangers of Telegram
Recently the App Telegram promoted as similar to What’s app with added private facilities has been in the news again, often used by conspiracy theorists, illegal sellers and terrorists. They offer virtual rooms, where people may be invited to share harmful and illegal material such child pornography or arrange drug dealing, smuggling or modern slavery.
https://www.ft.com/content/c70ef7d6-230a-4404-b854-2e75fe0f2e0a