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Hong Kong protestors using Bridgefy's Bluetooth-based mesh network messaging app

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131–140 of 221 posts

Re: Hong Kong protestors using Bridgefy's Bluetooth-based mesh network messaging app

#131

Earlier quoted context omitted.

Maybe the Chinese government wouldn't, but the people would care, a lot. The Chinese government is perpetually afraid of revolution and rebellion.

Do mainland Chinese really use that much of the global Internet?

Yes, an enormous amount of data crosses the border from HK into China

Re: Hong Kong protestors using Bridgefy's Bluetooth-based mesh network messaging app

#132
post #80

I just tried the app via the US App Store and it requires you to verify through SMS before use. This means that it’s neither anonymous nor fit for use in a disaster zone. Good example of software that would be better if open source.

Is there any software that would be worse when open source?

Online game clients which attempt to verify that a human is playing rather than a bot.

Re: Hong Kong protestors using Bridgefy's Bluetooth-based mesh network messaging app

#133

No closed source mesh networking can be secure. However good user experience it has. They are no different than using WhatsApp. Indeed in that respect at least Signal is better. I am not sure why protestors did not adopt the open source serval mesh project apk and ios app. [1] In Hong Kong given the density of building it's bit hard to have a line of sight, so it will still be hard to build a local network. But it's…

Something works, it helps their protests admist disruption of telecom. Appreciate that please. Not everything needs to be technical. More we speak of tech, more morale we loose.

Re: Hong Kong protestors using Bridgefy's Bluetooth-based mesh network messaging app

#134

Earlier quoted context omitted.

Or join as a malicious node. There is no panacea without control over some infrastructure.

For something as low latency as messaging, you can probably use proof of work for DoS resistance

Because messaging software that drains batteries is what everyone wants...

Re: Hong Kong protestors using Bridgefy's Bluetooth-based mesh network messaging app

#135

Earlier quoted context omitted.

Maybe the Chinese government wouldn't, but the people would care, a lot. The Chinese government is perpetually afraid of revolution and rebellion.

Do mainland Chinese really use that much of the global Internet?

Foreign trade is ~37% of China's GDP so probably at least 1/3 of the country depends on it directly or indirectly. For context that's equivalent to the entire population of the US even if only a small fraction of those people are conducting the actual communications, negotiations, and transactions of international commerce.

Re: Hong Kong protestors using Bridgefy's Bluetooth-based mesh network messaging app

#136

Earlier quoted context omitted.

Next step, Chinese intelligence hacks their database of verified phone numbers. Anonymity over. Having the resources of a nation state, they could probably do it easily.

Or join as a malicious node. There is no panacea without control over some infrastructure.

If they were doing E2E encryption, that would not be a problem. Broadcasting to find the right recipient (the one with the decrypting key) but contents protected from everybody else.

Re: Hong Kong protestors using Bridgefy's Bluetooth-based mesh network messaging app

#137
post #64

Earlier quoted context omitted.

They still can cut off the consumers ISP and leave commercial untouched.

Let's take it a step further, and imagine a complete Internet blackout in HK, both consumer and commercial, even if just for a day or a week. I'm thinking up scenarios of how China can do a modern Tianamen and get away with it. I'd be happy to conclude that it isn't possible, but I'm not sure if I might be forgetting something...

Satellite comms would still work. But you raise an important point, as it's a strategic issue in the region: https://www.asiasentinel.com/econ-business/taiwan-fears-chin...

Re: Hong Kong protestors using Bridgefy's Bluetooth-based mesh network messaging app

#138
post #75

Earlier quoted context omitted.

That's exactly how Dzhokhar Dudayev was killed: using two laser guided missiles while he spoke on sat phone. The signal was interceped by a Russian reconaissance aircraft.

This tactic has been used a number of times that I'm aware of, in Eastern Europe, South America and the Middle East.

Surprising given how easily defeatable it is for anyone sufficiently motivated.

Re: Hong Kong protestors using Bridgefy's Bluetooth-based mesh network messaging app

#139

Earlier quoted context omitted.

That’s why I find it so funny the are waving US flags, along with Pepe the Frog flags. If they tried throwing Molotov cocktails at US cops, the outcome would be very different.

That's not really a thing. Some far-right groups sent provocateurs and livestream grifters on an all expenses paid trip to HK to cash in on 'anti communist protests' but their efforts fell flat after HKers were advised of their identities.

I should probably have included an example: https://coconuts.co/hongkong/news/not-welcome-far-right-patr...

Gibson has since been indicted for felony riot which can carry a term of up 5 years, incidentally.

Re: Hong Kong protestors using Bridgefy's Bluetooth-based mesh network messaging app

#140
post #73
post #54

Earlier quoted context omitted.

This kind of device matching can be done across any of the carriers or their MVNOs, all of them give up the data when asked by a government entity. Many tower locations will even be identical across carriers, making the matching even easier. Also this correlation could be done with stingray towers without bringing the cell carriers into the loop.

With the higher clustered protestors the tower linking won't be as identifiable as you might think.

Depends on the standard of proof that is required.
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