Telegram as cloud storage?

What's your opinion on using Telegram as cloud storage? I'm asking because I've seen plenty of porn groups with thousands of members, hosting thousands of videos and pictures, and to this day they've not been banned or anything.

I'm thinking of using a lonely private group to dump videos, movies, pictures, game installers, etc. However, there are some things I don't know:

1. How well encrypted is my data?
2. Can Telegram delete my data if I do this? Does …

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