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. On December 23rd, 2020, Pavel Durov posted to his channel that the company would need to start generating revenue. In early 2021, he added that any advertising on the platform would not use user data for targeting, and that it would be focused on βlarge one-to-many channels.β He pledged that ads would be βnon-intrusiveβ and that most users would simply not notice any change. Just days after Russia invaded Ukraine, Durov wrote that Telegram was "increasingly becoming a source of unverified information," and he worried about the app being used to "incite ethnic hatred." Some privacy experts say Telegram is not secure enough
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