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Is Telegram really an encrypted messaging app?

blog.cryptographyengineering.com

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Re: Is Telegram really an encrypted messaging app?

#401
post #223

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I'll have you know they had maths PhDs design their security, sir. Eight of them! Yeah, it's a bit of a joke.

Yeah, put a geometrician* to do the job of a cryptographer. This is what you get. * I'm being serious, Nikolai Durov's PhD dissertation title was "New Approach to Arakelov Geometry" https://bonndoc.ulb.uni-bonn.de/xmlui/handle/20.500.11811/31... https://arxiv.org/pdf/0704.2030

Advanced math is actually more difficult (in my opinion) than programming languages.

Re: Is Telegram really an encrypted messaging app?

#402
post #368
post #231

Earlier quoted context omitted.

That's the dangerous part. It's a messaging app that took in the function of a social media platform. It did so without robust security features like end-to-end encryption yet it advertised itself as heavily encrypted. Like Green stated in his blog post, users expect that to mean only recipient can read what you say, i.e. end-to-end encryption. Telegram would be fine if it advertised itself as a public square of the…

> a social media platform. It did so without robust security features like end-to-end encryption Most social media platforms doesn't support e2ee. Some chat apps do support e2ee but also requires a god damn phone number to login (yeah so does telegram), this makes "encryption" useless because authorities just ask the teleco to hand out the login SMS code.

The author of this article makes the point that social media is its key feature, but they still advertise Telegram as an encrypted messenger. So your messages to friends will be on Telegram, they're there for the social network, and they will be unencrypted because they don't support E2EE for group chats and deliberately hide the "secret chats" function.

Re: Is Telegram really an encrypted messaging app?

#403

Earlier quoted context omitted.

iCLoud can be disabled by MDM profile installed by Apple Configurator at setup.

Looks like an easy task, even your granny can do it.

It does require a few clicks and passcode entry, https://support.apple.com/en-us/102400

Re: Is Telegram really an encrypted messaging app?

#404
post #300

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If the text appears on your screen I'm pretty sure there are ways for Google to capture it. I don't need to know how android's API works, knowing it probably just makes one blind to the big picture. You have to trust your OS/phone maker not to do a MITM.

Yes, but Google cannot be compelled to turn over data they don't actually have on their servers because the users encrypted it before it arrived with keys Google don't control. Signal could modify the application so a remote flag in the Play store binaries could be triggered to exfiltrate data as well. But the key distinction is the normal path of Signal gives them absolutely nothing they can tell anyone other then t…

I think parent's point is, if data appears on sceen, the OS in theory can capture it and send to Google servers as screenshots or OCR'd text.

Re: Is Telegram really an encrypted messaging app?

#406

Try the mud puddle test: log into your account on a new device using the password recovery flow. Can you see your old messages? If the answer is yes then law enforcement can too. https://www.forbes.com/sites/anthonykosner/2012/08/05/how-se...

> If the answer is yes then law enforcement can too. Is it technically possible for them to see it: yes Does Telegram let them see it: I don't think so. That seems to be the core issue around Durov being arrested. They probably should implement E2EE for everything. Then they will have a good excuse not to cooperate, because they simply don't have the data.

AFAIK this current case has absolutely nothing to do with any form of chat features, it’s about telegram’s public channels that more or less work like reddit/twitter/any other news channels, except it refuses to censor content.

Re: Is Telegram really an encrypted messaging app?

#407

Earlier quoted context omitted.

Looks like an easy task, even your granny can do it.

It does require a few clicks and passcode entry, https://support.apple.com/en-us/102400

Why do you need a Mac and an additional software for this? This is clearly made for corporate users and not for ordinary people.

Re: Is Telegram really an encrypted messaging app?

#408

Earlier quoted context omitted.

It does require a few clicks and passcode entry, https://support.apple.com/en-us/102400

Why do you need a Mac and an additional software for this? This is clearly made for corporate users and not for ordinary people.

Mac is not needed, https://news.ycombinator.com/item?id=41351559

After an MDM profile is created by someone technical, it can be emailed to the non-technical user and installed with a few clicks and passcode confirmation.

Re: Is Telegram really an encrypted messaging app?

#409

Earlier quoted context omitted.

Also, iMessage is very secure...but then all your stuff is backed up on iCloud servers unless you specifically disable it. That includes all your iCloud encryption keys and plaintext messages. Worse, iPhones immediately start backing up to iCloud when set up for a new user - the only way to keep your network passwords and all manner of other stuff from hitting iCloud servers is to set the phone up with no network con…

Apple devices are also always gossiping about which devices are where

Which is one of the best features. I wouldn’t mind having an option to disable it, but then you also don’t get the advantage of others’ phones finding your device.

Re: Is Telegram really an encrypted messaging app?

#410
post #228

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defcon and blackhat are hacker/computer security conferences started by Jeff Moss (aka DT or Dark Tangent) in 1993 and held at the end of July or early August every year in Las Vegas.... The reason you don't bring your phone is it might get hacked

[dead]

Because the attendees are high-value targets who often have elevated permissions inside the firms or governments they work in, and that's worth even more.
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