Oh, come on! The $200000 bounty for breaking Telegram encryption is there forever. SHA-1 BTC piñata was broken in 2017[1], and MTproto still stands.
Russian government needed to use it's leverage on a telco to break into political activist's Telegrams[2] about the same time some script kiddies easily broke into dozen of celebs' iClouds.
[2] https://www.ft.com/content/74d5ce00-12dd-11e6-839f-292294709...
All it needs is research-verified encryption!