Yes. Telegram is not secure. You are better of using messenger or airsend (https://www.airsend.io/ https://www.airsend.io/). Here is a detailed post on Telegram

Yes. Telegram is not secure. You are better of using messenger or airsend (https://www.airsend.io/ https://www.airsend.io/). Here is a detailed post on Telegram security (https://heimdalsecurity.com/blog/is-telegram-secure/ https://heimdalsecurity.com/blog/is-telegram-secure/). E2E encryption is not default it applies to only secure chats.