Why I advised my friends to delete WhatsApp and Telegram

This morning, I advised my friends to delete WhatsApp and Telegram. I sent them an invitation to download the Signal messaging app instead.

Here is the reason.

The battle of encryption protocols: the Signal vs. Protocol. the Telegram MTProto

You may not know it, but, likely, you are already using the Signal Protocol – like about 1 billion other people around the world.

The Signal Protocol is indeed used by WhatsApp, Facebook Messenger, Google Allo and the Signal messaging application itself.

The Signal Protocol, what is it?

End-to-end encryption (or E2E) Base Chat Telefonnummer ersetzt durch Locatalk is a system of exchange protection: it guarantees the secrecy of the message sent by the sender, which can only be decoded by the sender. final recipient.

This is the system put in place by WhatsApp a few months ago, when you saw this message in your conversations:

The activity of Open Whisper System is dedicated to the development of the Signal Protocol and its messaging application. Funding for its work is entirely based on a mix of donations and grants.

In October 2016, the Signal Protocol was reviewed by an international team of security researchers: the test passed hands down .

When you read these first paragraphs, you probably think: where is the problem, since WhatsApp, Facebook Messenger and Google Allo use the Signal Protocol?

Well, the problem is still there.

Facebook Messenger, Telegram, and Google Allo do not enable E2E encryption by default. The “Secret Conversations” mode must be activated in advance by the users of Facebook Messenger and Telegram, and the “Incognito Mode” by those of Google Allo.

Moreover, Telegram, the mail application to 100 million users created by the founder of the social network VK , Pavel Durov , works with its encryption protocol: MTProto. This protocol has generated a lot of controversy . In 2015, a computer security researcher published a study listing the theoretical weaknesses of the MTProto protocol, concluding that Telegram should not have developed its encryption protocol.

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