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 If the consequence was life or death…

YOU die if your conversation is exposed at all…

And you MUST send an online message…what are you using?  I am being sincere….

Signal, telegram, IOS, simplex, keet l, telegram clone ( @JeffG 
 Oxchat 
 I love 0xchat, but it is way too early. 
 The website link didn’t work.

https://0xchat.com

I would be dead if I followed this advice. 
 💀 
 0x is seriously awesome though. I have high hopes for this app. 
 I’d use draftkings.   You can place a bet while you’re at it. People seem to love that. 
 Do I have a chance to exchange keys and code with my communication partner "out of band" first?

If yes, encrypt message with key and steganographically embed it in a TikTok video's audio, using only the harmonics to resist compression artifacts stomping all over the signal.

If no, SimpleX. 
 nostr:nprofile1qqs2j6345gjyq2uqwhzd5g8sgaufdt7vxw2md7kk8cc2vj9gyg4x56gpg3mhxw309a3xjarrda5kuu3kv3jn2mrtweurgarswajx67njv3nxgurvvy6hx7tpxfskvamsvdsky6n4wqe8surfx4j82mrzv9jzummwd9hkutcprdmhxue69uhhg6r9vehhyetnwshxummnw3erztnrdakj7q2ywaen5te0dehhxarjd3skuepjvaj8wdm8xdunwdmrw3n8gmmkwe5kcdekwech26ts09kk7dm5wd3hgmrcwp5hw6mwv4m85enfvshx7mnfdahz75xjdz6 would be very keen to learn the 2nd paragraph of your message. Could u elaborate it in layman's term? 🫣😁 ty 👌 
 I found some code on Github to do this, but can't claim to be an expert :)

Basically it converts data into very small shifts in the pitch of the different harmonics of the speaking voice in the audio. This can survive audio compression, and be recovered afterwards by the same program, but is completely non-obvious to listeners.

A government could try to scan all video for signs of steganography, but because there is so much video made in so many ways and so few are altered, they would be wasting their time unless they already knew what they were looking for.

And I'd encrypt the message first, with my conversation partner's GPG public key, so it looks random if discovered and nobody can read it.

That's the best I could do.

SimpleX probably nearly as good as long as its legal to be caught with and servers are accessible 
 wow...! nostr:nprofile1qqs2j6345gjyq2uqwhzd5g8sgaufdt7vxw2md7kk8cc2vj9gyg4x56gpg3mhxw309a3xjarrda5kuu3kv3jn2mrtweurgarswajx67njv3nxgurvvy6hx7tpxfskvamsvdsky6n4wqe8surfx4j82mrzv9jzummwd9hkutcprdmhxue69uhhg6r9vehhyetnwshxummnw3erztnrdakj7q2ywaen5te0dehhxarjd3skuepjvaj8wdm8xdunwdmrw3n8gmmkwe5kcdekwech26ts09kk7dm5wd3hgmrcwp5hw6mwv4m85enfvshx7mnfdahz75xjdz6 are you some sort of spy? LOL impressive and never thought of this method...👌💯☺️

Is the github link easy to find? ty  
 I'll have a look :) 
 legend! ty 👏 
 ctralie's "AudioCurveSteganography" is the algorithm I was talking about, but its more a proof of concept than a product.

sniperline047's "Audio-Steganography-CLI" is less stealthy, but more mature and usable now. 
 ty for sharing 🫂 
 if I can exchange codes, I'd do the cryptography and steganography myself and embed the message in an image on X. 
 Simplex 
 bootable usb using tail os over tor. encrypt all comms using pgp (kleopatra). it is amnesiac. If u need to save files, encrypt your external hard drive. ☺️👌 
 Burn after reading, hosted on my own StartOS server, encrypted with a password and accessed over Tor.  
 Sorry Fed, I am not telling you how I send private messages to people. Nice try. 
 😂

The idea would be, even if I was a FED, and even if I was aware of how you communicate…you should still be okay. 
 Does it matter how the message is exposed?  It's always possible that the recipient is compromised,  through no fault of my own or the tech involved...  Insecure key storage, for example.