You've got a security camera set up. You feel covered.
But there's a cheap device available online for under $50 that can cut your camera's WiFi connection in seconds and leave you with nothing. No alerts, no evidence.
Here's what's happening, and how to make sure your cameras keep recording no matter what.
TL;DR
WiFi security cameras have a real vulnerability; burglars can buy a cheap jamming device online and knock your camera offline in seconds, wiping out alerts and cloud footage entirely.
The fix? Go cellular or go local.
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4G/cellular cameras connect through mobile networks, not your router, jammers can't touch them
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SD card backup means footage is saved directly to the device, no signal needed
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WiFi cameras with local SD storage are a solid middle ground if cellular isn't an option
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Cloud-only cameras (like Nest and Ring) are the most vulnerable
Can Burglars Jam My Security Camera?
Yes, and it's easier than most people realise.
WiFi cameras connect to your home router on the 2.4GHz frequency. A device called a "de-authentication" jammer floods that frequency with interference and forces your camera offline. The scariest part? The whole thing takes seconds.
Once the camera loses its WiFi signal, it can't send alerts, and it can't save footage to the cloud.
As far as your security system is concerned, nothing happened. The burglar walks away clean.
This isn't a rare or sophisticated attack. Jamming devices are cheap, widely available, and their use in residential and rural burglaries is climbing. In April 2026, a Berwick homeowner had both his cars stolen after thieves knocked out every WiFi camera on his street with a single device. A neighbour's non-Wi-Fi camera captured the thieves on footage, while his camera recorded nothing.
If your camera runs on WiFi alone, that's the gap they're exploiting.
4G Cameras: The Best Choice for Protecting Cameras from Signal Blockers
The simplest way to protect security cameras from signal blockers is to take WiFi out of the equation entirely.
4G trail cameras and cellular trail cameras connect through mobile networks, the same encrypted cellular bands your phone runs on. There's no home router involved, so these security cameras work without WiFi, meaning a de-auth jammer has nothing to target.
To interfere with a cellular camera, a burglar would need military-grade equipment that costs thousands and attracts serious legal attention.
Three cameras worth knowing about:
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The SPROMISE S688 Ultimate 4G LTE Trail Camera is built for serious property monitoring. It sends alerts through the cellular network and keeps recording to its SD card if the mobile signal drops, so your footage is safe either way.
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The GardePro X80GL 4G AU shoots in 4K and works the same way. It pushes footage over 4G when it can, and writes everything locally to the SD card when it can't. Dead zone or not, it keeps capturing.
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The SPROMISE S378 Anti-Crime is purpose-built for exactly this threat. Cellular connectivity, local SD backup, and a setup designed to keep working even when someone is actively trying to stop it.
All three keep recording to the SD card even if the mobile signal drops completely. That local backup is what makes them hard to beat.
Does a Trail Camera Record Without a Phone Signal? Yes, and That's the Point
The SD card is your insurance policy. Even if a burglar uses a wide-spectrum jammer that takes out both WiFi and cellular signals, a camera with local SD storage keeps recording. It doesn't need a signal to write footage to a card sitting inside it.
This is where cloud-only cameras completely fall apart. Cameras like Nest and Ring are built around the assumption that your internet is always on, so the moment that connection is lost, they stop working.
A camera that records locally to an SD card has no such weakness. The footage exists physically on the device. Someone would have to physically take the camera to destroy the evidence, and at that point, you've got footage of them doing exactly that.
That's the difference between a security system and a security prop. For a deeper look at how these technologies stack up, this comparison of 4G vs WiFi trail cameras covers it well.
What If You Prefer WiFi? How to Solve the WiFi Vulnerability
Not everyone needs cellular. If you're monitoring a property with reliable internet and just want better coverage across a large area, a good WiFi system with local SD backup still gives you solid protection.
The GardePro Link Long Range is the one to look at here. It creates its own camera-to-hub connection rather than relying purely on your home router, which already puts it ahead of most standard WiFi cameras. And critically, it records to an SD card on board.
So if the WiFi signal gets jammed or drops out for any reason, the camera keeps capturing footage locally. You lose the real-time alerts, but you don't lose the evidence. Pull the card after the fact, and your evidence is still there.
It won't give you the same level of protection as a cellular camera against a determined attacker, but for most everyday monitoring situations, it closes the biggest gap in standard WiFi setups.
Quick Tips for Keeping Your Cameras Running
A few practical things that make a real difference:
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Place cameras high enough to prevent someone from easily grabbing them, but not so high that facial detail is lost. Roughly 2.5 to 3.5 metres works well for most setups.
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Visible cameras with signage are a deterrent on their own. Most opportunistic criminals will move on when they see active surveillance.
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Check SD cards regularly. Footage stored locally is only useful if you can retrieve it. Monthly checks during property rounds keep things in order.
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If you're in a cellular coverage area, a 4G camera is almost always worth it over WiFi for security use. The reliability difference in a jamming situation is significant.
Burglars Jamming Your Security Camera? No More
WiFi jamming is a real threat and a simple one for anyone willing to spend $50 online. The cameras that hold up against it are the ones that don't depend on WiFi to do their job.
So, how do you protect security cameras from signal blockers? Cellular cameras with SD backup are the most resilient option. But even a WiFi camera with local SD storage is a major step up from anything that relies purely on cloud recording.
If your current setup sends footage to the cloud and nowhere else, now is a good time to rethink it.
