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'In terms of encryption, Telegram is just not as good as WhatsApp,' says Kobeissi. Telegram by default only uses 'transport layer' encryption that protects the connection from the user to the server rather than from one user to another. That's because WhatsApp and Signal end-to-end encrypt every message and call by default, so that their own servers never access the content of conversations. But when it comes to encrypting users' communications so that they can't be surveilled, it simply doesn't measure up to WhatsApp-not to mention the nonprofit secure messaging app Signal, which Kobeissi and most other security professionals recommend. Telegram's privacy protections aren't necessarily faulty or broken on a fundamental level, says Nadim Kobeissi, a cryptographer and founder of the Paris-based cryptography consultancy Symbolic Software. “It's like if everyone else in the world has agreed that we're going to use drywall to do the walls in a house, and then you've got somebody who's using toothpaste.”

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People no longer want to exchange their privacy for free services.' 'We've had surges of downloads before, throughout our 7-year history of protecting user privacy,' Durov wrote from his Telegram account. Tens of millions of WhatsApp's users responded to that restatement of its (years-old) info-sharing practices by fleeing the service, and many went to Telegram, no doubt attracted in part by its claims of 'heavily encrypted' messaging. Telegram's founder, Pavel Durov, however, has attributed the boost more to WhatsApp's clarification of a privacy policy that includes sharing certain data-though not the content of messages-with its corporate parent, Facebook. That surge of adoption seems to have had two simultaneous sources: First, right-wing Americans have sought less-moderated communications platforms after many were banned from Twitter or Facebook for hate speech and disinformation, and after Amazon dropped hosting for their preferred social media service Parler, taking it offline. After a pause, one of the participants spoke: 'We're going to have to regroup and think about what we want to do about this.' In a follow-up session, another member of the group told Mimoun the moment was a 'rude awakening.'Įarlier this month, Telegram announced that it had hit a milestone of 500 million active monthly users and pointed to a single 72-hour period when 25 million people had joined the service. The company, Mimoun explained, is based in the United Arab Emirates.įirst laughter, then a more serious feeling of 'awkward realization' spread through the call, says Mimoun. One of them asked where Telegram is located.

They'd have to trust Telegram not to cooperate with any government that tries to compel it to cooperate in surveilling users.

In fact, the group messaging feature that the Southeast Asian activists used most often offers no end-to-end encryption at all. But by default it encrypts data only between your device and Telegram's server you have to turn on end-to-end encryption to prevent the server itself from seeing the messages. Mimoun explained that yes, Telegram encrypts messages. It had been used by Islamic extremists, one noted, so it must be secure. When Mimoun then asked them to name the security advantages of each of those options, several pointed to Telegram's encryption as a plus. Mimoun, the founder of the digital security nonprofit Horizontal, asked the participants to list messaging platforms that they'd heard of or used, and they quickly rattled off Facebook Messenger, WhatsApp, Signal, and Telegram. They belonged to one Southeast Asian country's pro-democracy coalition, a group at direct risk of surveillance and repression by their government. Last weekend, Raphael Mimoun hosted a digital security training workshop via videoconference with a dozen activists.

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