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Re:Secure messengers in war time by LeoPanthera on Tuesday March 01, 2022 @08:47PM (#30522632)
I was expecting more than "Telegram bad, use Signal".

In times of war, internet service is likely to be unreliable. Are there any messengers that support a mesh-based store-and-forward model, that do not require an internet connection?

I think it's also worth thinking outside of the digital box. Radio - CB/ham/amateur radio in particular - requires no infrastructure and is far more expensive to block than the internet.

Re:Secure messengers in war time by CameronNemo on Tuesday March 01, 2022 @09:10PM (#30522834)
Re:Secure messengers in war time by namibj on Wednesday March 02, 2022 @01:31AM (#30524422)
Note that Briar's darknet nature makes it not have a shared/social store-and-forward system. However, it does exchange messages with contacts whenever possible, recently added a file-based message transfer method (think dead-drop USB/microSD), and gossips message DAGs in forums and group chats (forums lack a leader; groups chat leaders can kick a member out but have to personally invite every member).
Re:Secure messengers in war time by squarefoot on Wednesday March 02, 2022 @04:08AM (#30525369)
> Radio - CB/ham/amateur radio in particular - requires no infrastructure and is far more expensive to block than the internet.

Very true in peace time, but it's in clear and easily traceable which makes it dangerous in war time; also there's little development in encryption over HAM/CB since it's illegal pretty much everywhere; encryption devices can be added externally, although for the above reason they're not immediately available at the next radio shop. Moreover, nowadays military forces can pinpoint immediately the source of a rogue transmission by measuring the phase delay of a signal on multiple fixed antennas, that is, they don't have to waste time while pointing directional antennas around to find the direction; therefore you push the PTT and after a fraction of second they have your location on the map. Now I'm not sure the Russians have this infrastructure in place in Ukraine, but they could if they wanted.

Re:Secure messengers in war time by LeoPanthera on Wednesday March 02, 2022 @03:51PM (#30532943)
This is no worse than a cellular signal which can be located just as easily, surely.
Re:Secure messengers in war time by oats on Tuesday March 01, 2022 @09:15PM (#30522862)
Ukraine, like countries often do during war, has temporarily banned amateur radio activity: http://www.arrl.org/news/amateur-radio-in-ukraine-ordered-of...
Re:Secure messengers in war time by hndamien on Tuesday March 01, 2022 @08:53PM (#30522683)