We’re currently experiencing a powerful DDoS attack, Telegram users in the Americas and some users from other countries may experience connection issues.— Telegram Messenger (@telegram) June 12, 2019
IP addresses coming mostly from China. Historically, all state actor-sized DDoS (200-400 Gb/s of junk) we experienced coincided in time with protests in Hong Kong (coordinated on @telegram). This case was not an exception.— Pavel Durov (@durov) June 12, 2019