What happens to my security cameras if the internet goes down?
It depends entirely on how they store footage. Cloud security cameras with no local storage stop recording the moment the internet drops, because they have nowhere to send the footage. Cameras recording to an on-site network video recorder (NVR) keep recording through an outage. Alarms that report over the internet with no cellular backup cannot raise an alert while the connection is down. In short, some of your security system keeps working in an NBN outage and some of it goes blind, and most owners do not know which is which until they go looking for footage that was never captured. Byteway reviews what a site’s cameras and alarms actually do when the internet drops, and this page walks through it device by device.
The dangerous part is not the outage itself. It is the false sense of security. A camera on the wall with its light on looks like it is working whether it is recording or not, so a business assumes it is covered and stops watching the risk. If that system quietly fails during an outage, the business is more exposed than if it had no cameras at all, because nobody is watching and nobody knows.
Device by Device: What Keeps Working, What Doesn’t
| Device | What it does when the internet drops | Fix |
|---|---|---|
| Cloud CCTV, no local storage | Stops recording. Footage is lost for the whole outage. | Add an NVR with local storage, or a cellular backup connection |
| NVR with local storage | Keeps recording to the on-site drive | Confirm it is genuinely recording locally, not cloud-only |
| Cloud-reporting alarm panel | Cannot send alerts to the monitoring centre | Add a cellular (4G) backup on the panel |
| Cellular alarm panel | Keeps reporting over mobile | Confirm the SIM and signal are active |
| Smart locks / access control | May fail open or fail secure; logs may stop | Confirm fail state and whether access logs keep recording offline |
The table makes the point: the weak link is almost always cloud-only recording and internet-only alarm reporting. Everything else is a matter of confirming it behaves the way you assumed.
Why this catches businesses out?
Outages are not rare and not always announced. A routine NBN fault, a cut line down the street, a power blip at the exchange, any of them can open a window of hours where a “monitored” site is neither recording nor monitored. The gap only becomes visible after an incident, when someone goes to pull the footage and there is nothing there for the exact window that mattered.
For retail, warehouses and clinics, that window is a real commercial and safety risk: a break-in during an outage, a stock loss, an incident on site with no record of what happened and no alarm raised at the time.
How to close the gap?
The fix is neither complex nor expensive, and it comes down to two decisions:
- Keep recording locally- An NVR with on-site storage keeps writing footage to a drive regardless of the internet. This is the single highest-value change for cloud-only CCTV.
- Keep the alarm reachable- A cellular backup on the alarm panel means it can still call the monitoring centre when the internet is down.
Which you need depends on the site. A small shop with two cameras has a different answer to a multi-door warehouse with an alarm contract. The point is to decide deliberately now, not discover the answer after an incident.
This sits alongside the broader question of what else stops working in an outage, covered on our page on whether 4G or 5G backup is enough to keep a business running during an NBN outage, and the standards that apply to connected devices, in our guide to smart device security standards in Australia. For camera systems themselves, see our CCTV cameras and solutions page.
Book a Free Security System Continuity Check. Byteway will test what your cameras and alarms actually do the moment the internet drops, and close the gaps, before you need the footage rather than after.
Frequently asked questions
What happens to my security cameras if the internet goes down?
It depends on storage. Cloud cameras with no local storage stop recording when the internet drops, while cameras recording to an on-site NVR keep working. Byteway checks which type your site runs and closes the gap so footage keeps recording through an outage.
Do cloud security cameras record without internet?
No. Cloud-only cameras need the internet to send footage to the cloud, so they stop recording during an outage. Adding an NVR with local storage, or a cellular backup connection, keeps them recording. Byteway sets up local recording so an internet outage does not leave you with missing footage.
Will my alarm still work during an NBN outage?
Only if it has a cellular backup. An alarm that reports to its monitoring centre over the internet cannot raise an alert while the internet is down. Byteway adds a cellular backup to the alarm panel so it stays reachable during an outage.
How do I keep my CCTV and alarm working if the internet drops?
Record locally with an NVR and add a cellular backup to the alarm panel. Together they keep footage recording and alarms reporting through an outage. Byteway runs a security system continuity check to confirm exactly what your site needs.
