What you think the modem can spy on by whom? Certainly not the ISP I suppose. They can already do it without the modem.

How to dispose that pulp then?

Is it really though? I would assume there would be automated systems that can do 80% of the job. It can be as simple as a USB key holding a portable executable that can run and connect to a remote system and report back the findings which the officer can just read the report in plain English. Training, of course, is expensive and rarely do so, but automation can get somewhere close relatively inexpensive.

Sorry. Data structures exists and uniformly random data is rare. Patterns still exists.

And deleted is a bad counter as deleted files won’t have a record in the file system.

That scanner is simply looking for high entropy data, and then report to its operator. It wouldn’t care if it is a drive or a volume or a file. If the entropy is high, flag it.

All random data have high entropy, same for encrypted data. The officer can see you have high entropy data then start throwing questions at you.

This community need better understanding of cryptography and how it translates to real world. Deniable encryption exists and does work on paper, but only on paper.

It is simply no hope aginst an automated scanner. No one search for files manually today.

The saving grace is it is licensed under AGPLv3 so community can take over if something happen.

Any source on this?

The point is they don’t have to proof if a piece of random data is indeed an encrypted blob.

Imagine you passing border security and got selected for search. They found a piece of data on your device with high entropy without known headers in the wrong place. You can claim you know nothing about it, yet they can speculate the heck out of you. In more civil nations, you might got on to a watch list. In a more authoritive nations, they can just detain you.

They don’t have to prove you hiding something. The mere fact of you have that piece of high entroy data is a clue to them, and they have the power to make your life hard. Oh you said you deny them for a search? First congrats you still have a choice, and secondly that’s also a clue to them.

For more info, read cryptsetup FAQ section 5.2 paragraph 3, 5.18, and 5.21. It is written by Milan Brož who is way more experienced than me on this matter.

IMO, deniable something encryption is just not practical in real life. Authorites can make you life real hard, or just throw you straight into jail, just by suspecting you have encrypted materials.

I thought not connecting it to the internet will make it OK?

XMPP isn’t any better in terms of metadata. OMEMO is an afterthought that slaps on to XMPP. Many metadata are still attached to the message. The threat model only protects the content and doesn’t guard aginst metadata and traffic analysis. Even OMEMO extension is still in experimental status. Not to mention, users still need to signup an account using their email.

Honestly, I think SimpleX is better in everyway. No account required, minimal metadata (at least from the technical whitepaper and other sources I read), fully open source (AGPLv3), an ok mobile and desktop client, and audited. The register friction is almost non existance. You just need to install, set a name, and off you go. The only worry I have with them is they took VC funds.

ADD: XMPP is still better for company internal communication, especially when compliances require conversation archiving.

As long as it fits into the slot, it should work.

That “ethical” is problematic. What considered to be ethical is very subjective to the culture context.

Edit: better wording

I think OP is quite clear that he wants something resembles to Telegram’s UI, but works with XMPP instead. The title is just part of the context. You still have to read the body, which uses terms “interface” and “UI”. This means he never intend something server side.

I won’t say your comment is inaccurate, but taken out of context and misinterpret what the OP means.

OP, I understand what you look for, but that’s not easy task. From my limited knowledge of apps development, achieving what you requested would likely be:

1. Identify and remove all relevent code to the backend. Easier if it’s modular, very hard if they’re litrered everywhere.
2. Chose a XMPP client library that have relavent extension support that can translate Telegram features that XMPP understands.
3. Write an adaptor (if modular) to match the methods signature and translates calls to the client library. Or reimplement all the code you removed (if littered everywhere) with the client library.

This is akin to swaping to a new engine for a car, with incompatible mounts. Diffcult to execute, and (I believe) low interest. You can try if you got the skills. I don’t and even I have, I will just use SimpleX which fits my needs.

OP already clearly stated he want to use XMPP. What OP is asking is some client features the functionality of Telegram client. Or a fork of Telegram client, gutted out every signle line of code interact with the backend, replace them with a XMPP client library.

Can you manually uncheck all then save it?

I think crypto can achieve stability, not by pegged to a fiat currency, but commodity backed. There are also mechanisms and algorithms that can confirm transactions without using excessive energy, be fast, and private all in the same time. I still think crypto have a future. Yet I don’t know how far that future is, but for now I will stay away from it as far as I can.

No as it’s not point to point. It involves an intermediate party to broker the transaction. Think that like a bank. You need to apply for one, which most likely involves KYC. Taler is designed such that the recipient is known, for tax purposes they claim.

In contrast, AFAIK crypto can be P2P, only involving the blockchain and miner/validator that don’t know you. That’s what not Taler try to do.

EDIT: Add correction to crypto description.