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United States China IT

DHS Warns of Sharp Rise in Chinese-Made Signal Jammers (theregister.com) 42

The Department of Homeland Security is concerned about the rate at which outlawed signal-jamming devices are being found across the US. From a report: In a warning issued on Wednesday, it said it has seen an 830 percent increase in seizures of these signal jammers since 2021, specifically those made in China. Signal-jamming devices are outlawed in the US, mainly because they can interfere with communications between emergency services and law enforcement.

While the Communications Act of 1934 effectively prohibits such devices, signal jammers of the type DHS is concerned about have only circulated in the last 20 to 30 years. Authorities have paid special attention to relay attack devices in recent years -- the types of hardware that can be used to clone signals used by systems such as remote car keys, although the first examples of these devices date back to the 1980s.

DHS Warns of Sharp Rise in Chinese-Made Signal Jammers

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  • by timholman ( 71886 ) on Friday June 20, 2025 @05:16PM (#65464395)

    The rise in the use of signal jammers is due in no small part to the popularity of WiFi-connected security cameras. For example, signal jammers are very popular tools among professional burglary rings. They've hit multiple homes in the pricier areas of the county I live in.

    Companies like Ring have been very successful in convincing consumers that "Ring = home security", when in fact Ring cameras are a terrible choice due to the fact that they must have a WiFi connection in order to operate. The burglars scout out pricey homes in neighborhoods where no one ever talks to their neighbors, and houses are isolated by distance, foliage, and fences. And it just so happens that the owners installed Ring cameras.

    So the burglars drive up, activate their jammers to knock out both the Ring cameras and the cell connection for any burglar alarm, then clean the place out. Even if an alarm goes off, chances are that no one will hear it, or call the police if they do.

    If you're truly serious about video security, you need hardwired cameras with onsite storage and battery backup. You might still get robbed, but at least you'll have something to show the police.

    • by ArchieBunker ( 132337 ) on Friday June 20, 2025 @05:21PM (#65464403)

      Since wifi and bluetooth use the same frequency it would be great to fire up a jammer for when people walk by carrying those enormous bluetooth speakers.

    • I solve this problem by not having much at home that's worth stealing.

      There's SOME stuff, but really, not that much. They'd get maybe $2000 selling my shit to someone. Not the end of the world for me.

    • by lucifuge31337 ( 529072 ) <[daryl] [at] [introspect.net]> on Friday June 20, 2025 @07:29PM (#65464683) Homepage
      Critical issue here: cameras don't prevent burglaries. They are not really any sort of security from that type of event.
      Yes, they may be security for other purposes, but all you're doing in the event of burgulary is capturing (often useless) evidence.
      • by AmiMoJo ( 196126 )

        The main use for cameras is catching anti-social behaviour, like people hitting your car and then driving off, or kids vandalizing stuff in your garden.

        It's wireless alarms that are really stupid. You have a wireless window alarm, but the alarm panel that is hard wired to the internet and which could alert you just ignores the fact that all the sensors went offline at the same time. The software seems to have been written in the 90s and never improved.

    • by dbialac ( 320955 )
      All of this is true, but do keep in mind that such jammers are actually quite illegal in the US.
      • by gweihir ( 88907 )

        All of this is true, but do keep in mind that such jammers are actually quite illegal in the US.

        And so is burglary. Your point?

    • by gweihir ( 88907 )

      Indeed. And the jammers will not go away. They are cheap, easy to make and basically can be one-time "throw away" gadgets.

    • To understand the story though, you've got to look at the DHS quote, from TFA:

      "Signal jammers have been used by illegal aliens across the country to jam communications during police operations, bank robberies, burglaries, and other dangerous crimes. Under the vigilance of [Customs and Border Protection], national security begins at America's ports. As Chinese manufacturers attempt to smuggle signal jammers, we will continue to seize these tools of terrorism. President Trump and Secretary Noem will always protect America's critical infrastructure and law enforcement"

      All these evil foreigners (not any US citizens, obviously) are being evil and terroristic and only DHS, nobly led by the Dear Leader, can protect you. Seems to have very little to do with any actual threat and more with peddling the current political line.

  • I really want one. But I fear my government ):

    • Re: (Score:2, Insightful)

      Buy some tactical gear, a mask, and a fake ICE badge and you’re set. You can do whatever you want.

    • Haha.. ohh.. nothing..yeah, me neither, never crossed my mind, but ... how much are these things?
  • Okay, but ... (Score:5, Insightful)

    by fahrbot-bot ( 874524 ) on Friday June 20, 2025 @06:03PM (#65464479)

    Not sure why it's relevant that they're made in China, except to further a political agenda.
    I mean, wouldn't signal blockers made anywhere work the same and be just as bad?

    Would DHS prefer people use U.S. made signal jammers?
    Upside - It would bring that manufacturing back, etc... and they'd be tariff-free!

    /s

    • >"Not sure why it's relevant that they're made in China"

      Probably because the observations support that they are, in fact, coming from China. China has a track record of not really caring about our laws, you know. The implication is that they are feeding an illegal market. Is there a political agenda on their part (as is likely with the whole Fentanyl precursor stuff)? Possibly. But it is more likely just happily making money on a consumer demand.

      We have two converging issues- over-reliance on wirele

      • I do wonder how much of jammer use is for ... wanting to disrupt the constant, incredibly rude/annoying/selfish behavior of many mobile phone/device users.

        I was in a doctor's office a little while ago and there was this (much) older guy watching YouTube videos on his phone with the volume up, while literally sitting across from a sign that asked people not to do things like that. His wife nudged him after a few minutes and he turned it down. It was annoying, but the guy was clearly a little hard of hearing, though don't know why he didn't have ear buds...

        • know why he didn't have ear buds...

          Because like all such people who listen to their shit in public without headphones, he's A FUCKING ASSHOLE.

      • by vbdasc ( 146051 )

        Why should China care about your laws? Does the USA care about Chinese laws?

        • Re: (Score:2, Informative)

          by markdavis ( 642305 )

          >"Why should China care about your laws?"

          Because they are on the world stage? Because it is required when considered a favored nation? Because they will build less trust and have less business when companies believe their are going to rip off their intellectual property or produce their products in a way that does violate our laws?

          >"Does the USA care about Chinese laws?"

          As far as I am aware, yes.

          • >>"Does the USA care about Chinese laws?"

            >As far as I am aware, yes.

            Rofl. I suggest you become more aware. The USA cares nothing for the laws in other countries, except that they should change to be the same as the US ones.

            If these devices are illegal in the USA, then they should be confiscated at customs. They don't seem to have much problem charging a tariff, so it shouldn't take much to reject anything illegal.

    • Re: Okay, but ... (Score:2, Redundant)

      by dwater ( 72834 )

      It's not relevant. It's click bait and promoting an anti-China agenda...simple as that.

  • by PPH ( 736903 ) on Friday June 20, 2025 @07:41PM (#65464703)

    ... Hedy Lamarr when we need her?

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