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"For 18 months, residents of a village in Wales have been mystified as to why their broadband internet crashed every morning.

Now engineers have finally identified the reason: A second-hand television that emitted a signal that interfered with the connection."

reddit.com/r/networking/commen

@byroon

The what is easy, only when is the question 😂

@fribbledom I wouldn't be able to control myself.

I would put it on a controller and just make a random time interval. The chaos potential would be amazing.

@fribbledom I want an Internet connection that knocks out TVs. Starting with the numbered channels.

@byroon @fribbledom so the problem was caused by SHINE eh? It's still not exactly clear how the electrical impulse can take down a large network, I mean, we are talking EMP weaponry here basically, and if it's just an old TV (or numerous other electrical devices) is all it takes then this indicates a serious vulnerability in what could be critical infrastructure!

@fribbledom seems like you just need to hook into cable and send a signal generator down it. Looks like inadequate filtering..

@fribbledom There is no reason this needed to take 18 months to locate. Beamforming antennas, in >=3 mobile locations should have been able to nail that source to a few feet in days.

@LovesTha
...days after you know to look for a strong EMP.

I'm very surprised that an EMP can even do this to wirebound networks. Mobile data and Wifi, sure. But regular old DSL? crazy!

@fribbledom

@Mr_Teatime @fribbledom Wandering the streets with spectrum analysers and hand held antennas will take quite a while to find a daily pulse.

@LovesTha
Unless you happen to know it'll appear at 7:00 every morning...
@fribbledom

@Mr_Teatime @fribbledom Yeah, so you get one sample of how strong the pulse is in one direction for each set of gear you have each day.

Or with good beam forming antennas you get the direction it is coming from at each location each day.

@LovesTha
...unless you have a bunch of sensors in multiple places over town, which gives you n readings, without having to climb on mobile phone masts, and the next morning you can do it from locations closer to (and better aligned wrt) the source. So wouldn't you be able to pinpoint it quicker with mobile units?

Doesn't matter that much, though, because they've already done it :)
@fribbledom

@LovesTha @fribbledom
Actually, scratch that. The article says they only had 1 device (or not? it's a bit ambiguous) -- so multiple stationary measurements wouldn't have worked. You'd need a different position every time the pulse hits, and for that, a mobile sensor would be better suited.

The article also doesn't say how long it took them to locate the source, or why they only had one sensor ... either way, being able to successively move the sensor(s) closer to the source can only help.

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