做网页开发时，允许用户输入url图片地址来作为自己的头像有什么风险？ - 无助的烂尾楼流泪的回答 - 知乎
https://www.zhihu.com/question/603596848/answer/1911342550993856436
BY inside class
Telegram’s stand out feature is its encryption scheme that keeps messages and media secure in transit. The scheme is known as MTProto and is based on 256-bit AES encryption, RSA encryption, and Diffie-Hellman key exchange. The result of this complicated and technical-sounding jargon? A messaging service that claims to keep your data safe.Why do we say claims? When dealing with security, you always want to leave room for scrutiny, and a few cryptography experts have criticized the system. Overall, any level of encryption is better than none, but a level of discretion should always be observed with any online connected system, even Telegram.
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