Despite Telegram's origins, its approach to users' security has privacy advocates worried. Telegram users are able to send files of any type up to 2GB each and access them from any device, with no limit on cloud storage, which has made downloading files more popular on the platform. For example, WhatsApp restricted the number of times a user could forward something, and developed automated systems that detect and flag objectionable content. But Kliuchnikov, the Ukranian now in France, said he will use Signal or WhatsApp for sensitive conversations, but questions around privacy on Telegram do not give him pause when it comes to sharing information about the war. In 2018, Russia banned Telegram although it reversed the prohibition two years later.
from br