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Stealth signals are bypassing Iran’s internet blackout(spectrum.ieee.org)
80 points by WaitWaitWha 4 hours ago | 27 comments
thakoppno an hour ago | parent | next [-]

> Satellite TV uses a file system called an MPEG transport stream that allows multiple audio, video, or data layers to be packaged into a single stream file.

Interesting read but that part really made me question my own sanity. It’s probably just lost in translation.

wmf an hour ago | parent | next [-]

I wouldn't describe Transport Stream as a "file system" but most people probably aren't familiar with the term multiplexing. It's true if you record a TS (e.g. to a .ts file) you can later split out the different Program Streams which can hold pretty much anything.

djkoolaide an hour ago | parent | prev [-]

that's how it works. point a free-to-air dish at the right place in the sky, demodulate the DVB-S2 signal, and it's often IP traffic moving through mpeg transport streams.

thakoppno an hour ago | parent [-]

it’s the claim of it being a file system that’s throwing me. obviously nbd but maybe my mental models broken again.

pabs3 an hour ago | parent [-]

http://tom7.org/harder/

bawolff 3 hours ago | parent | prev | next [-]

So its just embeding some files in a satalite tv broadcast stream?

I dont think that helps that much. If you have satalite tv going in, you already have video coming in, are arbitrary files really that much more useful?

The thing people really want internet communication for is 2 way coms. Getting info on the situation on the ground out and allowing different groups inside Iran to coordinate. I fail to see how this helps with that.

labelbabyjunior 3 hours ago | parent [-]

> So its just embeding some files in a satalite tv broadcast stream?

Which is neither new nor novel.

PlayCable was doing this to download console games over analog cable systems <checks notes> 46 years ago.

TeleText says hello.

tgma 3 hours ago | parent | prev | next [-]

None of the people I know inside Iran actually use this Toosheh[1] thing. And I mean zero, nada, none. Not one. Most are unaware of its existence. This sounds something that sounded cool pre-Starlink era that received funds and favors from western governments and NGOs and did not result in anything useful (not surprising that they get international press too despite being a total failure.) Realistically, a download-only solution does not solve a problem. Persian video content that people watch are delivered via DVB Satellite TV video channels. With Internet, what people want is to communicate and therefore need realtime access and data upload capability to contact others and use web services, not download a new offline copy of Wikipedia everyday! In practice, Iranians inside Iran end up mostly using VPNs and tunnels of various sorts. Often some variant of shadowsocks with SNI spoofing, which stop working in a full blackout. What will be left during a full blackout is people who have government-sanctioned SIM cards with full Internet access (known as "white SIMs") to propagandize on social networks in favor of the reigme when everyone else is disconnected and, a tiny set of people who have acquired Starlink terminals.

The same set of people behind that project were supposedly given additional resources to smuggle Starlinks inside, and in the Persian community on Twitter, there's an ongoing meme mocking where those Starlinks actually went and given to whom, never to get an answer...

[1]: TLDR: data archive within DVB-S video stream

stackghost 2 hours ago | parent [-]

>What will be left during a full blackout is people who have government-sanctioned SIM cards with full Internet access (known as "white SIMs") to propagandize on social networks in favor of the reigme when everyone else is disconnected and a tiny set of people who have Starlink.

One would think this is exactly the sort of circumstances under which store-and-forward/delay-tolerant routing would be useful. Years before Jack Dorsey thought of bitchat[0] I had the same idea, but never pursued it because I live in a western country but not in a "tech city", in other words, nobody around here is interested in being an early adopter of an app primarily of use only to preppers or people living under repressive authoritarian regimes.

Anyways, it's a great idea in theory, as the techno-anarchist preppers that LARP with off-the-shelf lilygo LoRa tranceivers will be happy to tell you. But in practice nobody who actually could benefit from these seems to adopt these things. Or at least I never hear about it, if they indeed do. Perhaps today's internet blackouts are too transient for a 2026 version of samizdat to develop?

Do the people you know inside Iran plan to just wait it out, or do they have some other solution ready for a total blackout?

[0] https://bitchat.free/

tgma 2 hours ago | parent [-]

To be clear while the annoying firewall has been a forever thing, and even grandmas know how to use VPNs day-to-day to access Instagram, a full, long-term blackout, has been a relatively new thing, so I don't think there's enough prep for that. Bitchat was certainly something that was spoken about after the January protests and before the war broke out. There was even a thief who cloned and renamed it something Persian without attribution and with shady security and the Bitchat guy got upset about it just a few weeks ago.

There are some government-sanctioned messengers that apparently keep working but some people would not use it as they are completely insecure and watched by big brother, of course. The biggest issue is getting data out of the country not internal comms (e.g. video evidence of massacre, for example, so that some poeple like in this very thread don't get the ammo to whitewash the regime, intentionally or accidentally.)

stackghost an hour ago | parent [-]

>The biggest issue is getting data out of the country not internal comms

No doubt. Unless there's somebody friendly just across the border in Azerbaijan or Basrah or something, I don't see how they'd do it. Maybe point a dish and establish a point to point link, but you'd need to pre-arrange that.

tgma an hour ago | parent [-]

I think what you are suggesting is more practical today than before, since there are at least a few people who have some sort of access. The real catch is really the prep, or lack thereof. The anecdotes around me is they are hoping (perhaps wishfully) for a total regime collapse and internet freedom relatively soon.

zenmac 3 hours ago | parent | prev | next [-]

>NFP’s solution was to add redundancy, similar in principle to a data-storage technique called RAID (redundant array of independent disks). Instead of sending each piece of data once, we send extra information that allows missing or corrupted packets to be reconstructed.

A bit disappointing TBH if that is their solution. Seems like everything is trying to pigeon hole everyone into the proof of work scenario. If we have more power/energy then we will beat you in everything security, coding and censorship circumvention.

femto 3 hours ago | parent | next [-]

It's a sound solution. They are describing forward error correction with a variable code rate. Reducing the code rate increases the amount of redundancy, allowing the signal to be retrieved when the signal-to-noise ratio is lower. It's a standard part of communications theory and has a strong theoretical basis. A low enough code rate will overcome almost any level of jamming at the cost of reduced data rate, provided the receiver does not saturate.

wiml 3 hours ago | parent | prev | next [-]

I think they're just doing forward error correction (FEC). Not sure what that has to do with proof-of-work?

hgoel 3 hours ago | parent | prev [-]

What other method do you propose to deal with data loss?

darig 3 hours ago | parent | prev | next [-]

[dead]

SanjayMehta 2 hours ago | parent | prev [-]

The claim of 30,000 dead in the crackdown is dubious. It originates from a doctor turned fashion blogger turned independent journalist called Deepa Parent[1] and doesn't have any other evidence to support it. (The Dresden fire bombing required tons of munitions and the toll was 25,000).[2]

Now having said that, given the nature of the Iranian theocracy, they are quite capable of such acts. Remember that they have hanged homosexuals from cranes,[3] and executed rape victims.[4] But 30,000 in two days [5] is an extraordinary claim which requires more evidence, certainly more than circular references tracing back to just one source.

[1] https://thegrayzone.com/2026/02/01/guardian-iranian-death-to...

[2] https://en.wikipedia.org/wiki/Bombing_of_Dresden

[3] https://en.wikipedia.org/wiki/Mahmoud_Asgari_and_Ayaz_Marhon...

[4] https://www.timesnownews.com/lifestyle/people/crime-against-...

[5] https://www.iranintl.com/en/202601255198

Edit: added [5]

throwawayheui57 22 minutes ago | parent | next [-]

If you really want to get informed about the protests in January and the death toll start looking at Amnesty’s report and you’ll see the 30000 is not dubious. Cherry picking who reported on a piece of news doesn’t invalidate the content of it.

https://www.amnesty.org/en/latest/campaigns/2026/01/what-hap...

at-fates-hands 2 hours ago | parent | prev | next [-]

>> But 30,000 in a day

The number was given over two days, not one.

The protests were in over 200 cities with 5 million+ participants, WE KNOW they fired live rounds this is undeniable if you only had 200 deaths per city you would reach a death toll north of 40k already. Yes it's not verified yes there isnt a video of exactly 30000 identifiable bodies side by side. But the number really isnt as unachievable as people make it out to be.

From another article: The 30,000 figure is also far beyond tallies being compiled by activists methodically assigning names to the dead. As of Saturday, the U.S.-based Human Rights Activists News Agency said it had confirmed 5,459 deaths and is investigating 17,031 more.

https://www.aol.com/articles/iran-protest-death-toll-could-1...

The mass murdering of 5,400 people is nothing to scoff at, on any level, even over two days.

SanjayMehta an hour ago | parent | next [-]

You're right: two days.

an hour ago | parent [-]
[deleted]
mulmen an hour ago | parent | prev [-]

> The number was given over two days, not one.

Was it? I can’t find that in the linked article. The source for the ~7,000 deaths linked near the only instance of “30,000” says it was over the first fifty days.

SanjayMehta an hour ago | parent [-]

It's not in this article but in others. I'm skeptical because the original source is that fashion blogger.

https://www.iranintl.com/en/202601255198

mulmen an hour ago | parent [-]

It’s unclear where the 30,000 comes from because the article doesn’t cite a source for that number. You’re drawing an unsubstantiated connection between two (or more?) articles so you can invoke and then discredit a specific reporter.

At this point I’m not sure what you are even talking about but you seem to have an agenda.

2 hours ago | parent | prev | next [-]
[deleted]
mulmen an hour ago | parent | prev [-]

> The Dresden fire bombing required tons of munitions and the toll was 25,000

For clarity 3,900 tons over four raids and 1,500 planes.

I’m not sure how to translate that into modern munitions but I’m also uncertain why a strategic bombing death toll should tell us anything about Iranian protester deaths. Iran isn’t doing strategic bombing of their citizens, they’re using small arms across hundreds of locations.

The linked article cites a source [1] with detailed methodology for their actual claim of 7,000 deaths and mentions that other unmentioned sources claim it could go as high as 30,000. I don’t see any claim of that being in a single day.

Given the timeframe and widespread nature of these protests it doesn’t seem implausible.

[1]: https://www.en-hrana.org/the-crimson-winter-a-50-day-record-...