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Comment by QuarterReptile | Hacker News Reader

I'm sure it's not coincidental that I got an email today about wired Ring cameras.

Have we yet developed consumer grade counter-jamming tech? Seems like the tech to detect and recognize these attacks shouldn't be very expensive at all, and then it can text you (mobile network, of course) to call the police on the jammers (I imagine the police would get pretty peeved if you don't have a human in the loop.)

From there we can get some sort of adaptive, agile jammers for the criminals, and then FPGAs recording the jammers for processing and recognition at a central anti-jamming-as-a-service company.

Advanced missile warfare for my neighborhood, without the explosives!

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I'm reminded of when key fob range extender attacks became common, security people were talking about faraday cages, removing batteries every night, encryption, more complex protocols, and all sorts of crazy stuff to try and protect against it.

Car manufactures added a motion sensor to the fobs to disable the signal after being motionless, and that's all that was really needed to kill the attack.

FCC certification states that most consumer devices must accept interference, including that which can cause unintended operation.

This isn't the same kind of interference. Wi-Fi de-auth attacks are technically still 'interference' but a layer above

I believe it also requires devices to not create interference, or something down that line.

Look for a deauth detector. On Amazon you can find an ESP8266 preflashed with deauth detection firmware and it includes a hardware buzzer. The firmware is probably something like this: https://github.com/SpacehuhnTech/DeauthDetector

I don't know where they got the deauthing thing from. The majority of criminals are just using straight up jammers from China.

I can't imagine it's hard to make a jammer given that wifi is often naturally jammed. You could generate very strong signals in the correct frequency range with a modified microwave; you'd just need a way to modulate the signal to make noise, which you might be able to do physically, or by further modifying the microwave (one of those rare times you want a noisy power supply!)

Of course, portability might be a problem.

I wonder if a standard WiFi router plus directional antenna (and set to the same band) might be enough.

Standard WiFi AP only broadcasts short identification/presence beacon frames once a second or so.

With a firmware that supports TX99 (a mode where radio is transmitting all the time, typically used for testing/certification process)- easily.

You can buy esp32 boards preprogrammed with wifi deauthing from china too.

> Have we yet developed consumer grade counter-jamming tech?

Run a hard wire to it. It's simple, and it works.

> text you ... to call the police

Those with the ability to jam/deauth WPA3 could potentially use an IMSI catcher to block SMS.

This is the sort of cat and mouse escalation I was looking for.

My place has an old school intercom system that links to the outside with push to talk button. Wonder if I can use the wiring to upgrade it to something more modern. No Ring or anything from amazon or google. Old thing says NuTone on it.

Anti-jamming is as illegal as jamming, unfortunately.

What about giant electromagnets built-into and hidden under the driveway? You could leave the doors unlocked with the keys in the ignition. It may start, but it won't go anywhere until the emagnet is switched-off. A little hard on the shocks and tires, but peace of mind is priceless.

> A little hard on the shocks and tires, but peace of mind is priceless.

"A Florida man was discovered deceased under his vehicle last week with bizarre injuries. Examination of video from a neighbour's security camera shows he was working under his vehicle at the time when suddenly the vehicle crushed him into the driveway. "

Tragic.

What would electromagnets underneath your driveway even accomplish?

I think the idea is to magnetically pull the car down so hard it's pinned in place on the driveway.

Not really practical.

Correct. But how could you have figured that out so effortlessly? In my GGP, I had encoded that secret bit of information in a hard encryption known as the English language. You must have somehow uncovered the key, which was reading comprehension. Well done.

Easy degaussing of any passing credit cards I guess?

Or you could just chain it.

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