I stopped seeing Telegram as Mecca of Security and Freedom.
I used to, but not anymore, there are contradictions.
Everybody perceives Telegram as open source project - but in fact it is really NOT an open source project.
The core of Telegram, its backend - is a closed source proprietary project, which will never be open sourced and revealed. Only the Frontend clients (web, Android, iOS, etc.) are opensourced, but it's not enough to be sure that your data is secure.
One of the tech leads of VK, and later telegram engineer and insider - revealed the true side of Telegram in his article on Medium
https://medium.com/@anton.rozenberg/pavel-durov-sued-senior-tech-lead-for-1-7-b24961dec503after he was sued for ~ 1.7 million USD (100 million rubbles) officially for revealing the company commercial secrets.
He actually revealed shady corp schema between 4 companies:
connection between Russian company "TELEGRAPH" OOO (LLC) <-----> with beliz company "Telegraph Inc." <---> with UK london-based Telegram Messenger LLP <-----> and with Dogge Labs Ltd. (British Virgin Islands)
https://cdn-images-1.medium.com/max/1600/1*zToV9W22AKQawau-X93UWQ.pngShuffling money out of one pocket into another.
Personally i don't like when people are contradictory:
Pavel Durov says that he doesn't care about money, he claims to be ascetic at the same time he uses all luxury life behind the scenes.
Juts read the article from insider and and will all be clear
https://medium.com/@anton.rozenberg/pavel-durov-sued-senior-tech-lead-for-1-7-b24961dec503