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Ask HN: How do we know Signal or Telegram don't store our data on their servers?

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71–80 of 241 posts

Re: Ask HN: How do we know Signal or Telegram don't store our data on their servers?

#71
post #6

Signal is open source, you and anyone else can inspect the code. You can then build it from source and install on your android directly avoiding the play store.

So how do I build the Signal server and confirm it's identical to the one they're running?

Other than literally showing up at somebody's datacenter and taking their machines away you won't be able to do this with any service ever.

Re: Ask HN: How do we know Signal or Telegram don't store our data on their servers?

#72

It's important to note that Telegram does store all your data by default as they do not enable E2EE for everything like Signal does. So if you're under the assumption that they don't, this is incorrect. Telegram, for all intents and purposes, is about as secure as using Facebook. The best you can do with Telegram is hope they don't sell out or get compromised at some point in the future, because all your private comm…

In a way, yes, Telegram is even less secure than WhatsApp for this.

The way I've been presenting it to people is that Telegram can look at more data than WhatsApp can. But WhatsApp will use the data they have more than Telegram will. That's the tradeoff.

And yes, obviously Signal is more secure than both of them but I've been steering non-techies to Telegram because of usability, backups, cross-device history etc. As usual, everything is a tradeoff, but if people were happily using WhatsApp up until now, and also use Gmail, Telegram is not worse than those.

Re: Ask HN: How do we know Signal or Telegram don't store our data on their servers?

#73
Which data? We can be somewhat sure that they don't have access to the content of Signal or Telegram secret chats as long as we have verified the identity of our contacts.

After that, what data do you care about? Neither Signal or Telegram is intended to provide complete anonymity. That is a much harder problem. For Mozilla that would involve Tor. I don't think that Mozilla really has "servers" in the sense you mean.

Re: Ask HN: How do we know Signal or Telegram don't store our data on their servers?

#74

What prevents Google from replacing Signal on the Android Application store with their custom and backdoored version ? Can we check a hash or something ? Does the signal foundation do that on a regular basis ?

If Google wanted to read your messages and were willing to use malware to do it, there’s little to stop them on Android. Even if Signal checked the apk regularly, there’s no guarantee that the apk served to them is the same one served to everyone else. They could also push an update to the OS that recognizes the Signal apk and applies a patch after downloading but before installing.

That said, Signal does apparently support reproducible builds so that people can check that the apk matches what’s on GitHub (though this is more of a way to detect malfeasance on Signal’s part rather than Google’s)

https://signal.org/blog/reproducible-android/

Re: Ask HN: How do we know Signal or Telegram don't store our data on their servers?

#75
post #38

We don't know that Signal doesn't store data about users on its servers. Even the source code can't tell us that, because we don't run the servers. What we do know is that programs like Telegram have to store data about users on their servers, by design. A big difference between the two projects is that Signal is carefully designed to minimize the amount of data the service needs to operate; it's why identifiers are…

I can't trust any company that has to read my contact list PERIOD! It's not something anyone should be having to share ever.

Re: Ask HN: How do we know Signal or Telegram don't store our data on their servers?

#76

Earlier quoted context omitted.

PIA used to be my go-to, but I immediately ceased using PIA after the 2019 acquisition by Kape Technologies, which has a rather foul track record.

What did you switch to?

I’ve been using Mullvad since the past few years and I’ve no complaints. The fact that the recent Mozilla VPN is based on Mullvad makes me more confident in my decision.

Re: Ask HN: How do we know Signal or Telegram don't store our data on their servers?

#77
post #21

Earlier quoted context omitted.

It doesn't matter if it's not. Security should depend completely on the clients. Public-key crypto allows private communication through insecure channels.

No, it does. In some cases (think dictatorship) - you not only want the secret police to not read your messages - you don't want them to know at all, who are you talking to(and how often and when!). Otherwise you might all go to jail (or worse), if they are after one contact of yours. And then you can try to feel save, that they don't know your encryption password. https://xkcd.com/538/

here https://www.deccanherald.com/national/north-and-central/jk-a...

not allowed to use VPNs because national security issues.

https://www.aa.com.tr/en/asia-pacific/india-launches-fresh-c...

"social media muisuse"

i remember last year this word was so much used, "misuse" which translates to criticizing the ruiling dictator government. it still is,

https://thenextweb.com/in/2020/01/08/kashmirs-police-want-pe...

here. a whatsapp group needs to be "registered" with police.

and lastly more recently, https://theintercept.com/2020/12/06/kashmir-social-media-pol...

this is a reason why i never signed up for whatsapp, havent joined signal, don't tweet or post on facebook. Why? because PII

the danger is real and i am living it. people better realize it

Re: Ask HN: How do we know Signal or Telegram don't store our data on their servers?

#78
post #72

It's important to note that Telegram does store all your data by default as they do not enable E2EE for everything like Signal does. So if you're under the assumption that they don't, this is incorrect. Telegram, for all intents and purposes, is about as secure as using Facebook. The best you can do with Telegram is hope they don't sell out or get compromised at some point in the future, because all your private comm…

In a way, yes, Telegram is even less secure than WhatsApp for this. The way I've been presenting it to people is that Telegram can look at more data than WhatsApp can. But WhatsApp will use the data they have more than Telegram will. That's the tradeoff. And yes, obviously Signal is more secure than both of them but I've been steering non-techies to Telegram because of usability, backups, cross-device history etc. As…

> The way I've been presenting it to people is that Telegram can look at more data than WhatsApp can. But WhatsApp will use the data they have more than Telegram will. That's the tradeoff.

I think you should look at the odds of that "can" turning into a "will" over time. After an acquisition, or a change in business fortunes, or a change in leadership...

Re: Ask HN: How do we know Signal or Telegram don't store our data on their servers?

#79
There's no need to trust them. You assume they log everything that your device sends them, as well as the time, IP address, etc. and infer all they can from it. Then you act accordingly. You can apply similar conservative assumptions to your device and the programs it runs, but for practical purposes you may want to relax them somewhat.

Re: Ask HN: How do we know Signal or Telegram don't store our data on their servers?

#80
post #75
post #38

We don't know that Signal doesn't store data about users on its servers. Even the source code can't tell us that, because we don't run the servers. What we do know is that programs like Telegram have to store data about users on their servers, by design. A big difference between the two projects is that Signal is carefully designed to minimize the amount of data the service needs to operate; it's why identifiers are…

I can't trust any company that has to read my contact list PERIOD! It's not something anyone should be having to share ever.

That's the point. They don't.
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