If someone got onto your network right now, could they watch your live cameras? For most systems the answer comes down to one setting: video encryption. If it is on, an intercepted camera stream is unreadable code. If it is off, anyone who can see the traffic can see your footage.
What video encryption actually does
Your camera produces raw video. Before that video travels anywhere — to the recorder, across your network, or out to the app on your phone — encryption scrambles it into code using a key. The stream that crosses the wire is not footage any more. It is noise with a lock on it.
It is the same principle as end-to-end encryption on your messaging apps: locked at one end, opened at the other, and anything intercepting it in the middle gets nothing useful. Decryption only happens on an authorized device holding the secure key. No key, no video.
That matters because of where footage is most exposed. A recorder in a locked cupboard is reasonably safe. The stream leaving it — over office Wi-Fi, a shared building network, out to a remote viewing app — is the part someone can quietly sit on.
How to check whether your system has it
Encryption is usually a checkbox, not a hardware feature, and on many systems it ships switched off. Log into your NVR or DVR and look for a network or security settings page. Depending on the brand you are looking for a stream encryption option, an HTTPS or TLS setting for the web interface, or wording like “enable encrypted transmission”. Turning it on is typically a reboot and nothing more.
Two caveats. Older analog HD cameras on coaxial cable cannot encrypt the camera-to-recorder link at all — the signal is analog until it reaches the DVR. And on very old IP firmware the option may not exist, which tells you the system is overdue for attention generally.
Encryption alone is not protection
This is the part people miss. A system can encrypt its video perfectly and still be wide open, because encryption only defends the footage in transit. It does nothing about someone logging in through the front door.
Complete protection needs three layers:
- Encryption — so an intercepted stream is unreadable.
- Strong custom passwords — a default admin password means nobody needs to intercept anything. They log in and watch. Change the password on the recorder and on every camera, and do not reuse one across the site.
- Updated firmware — known vulnerabilities get published, and unpatched recorders stay vulnerable to them no matter how well the video is encrypted.
Any one of the three on its own is not security. We regularly find systems that record beautifully, have encryption enabled, and are still running the factory password from the day they were installed.
What we recommend for Kitchener-Waterloo homes and businesses
The weakest systems we see locally are the ones installed quickly and never touched again. A few specifics worth knowing.
If you are in a multi-tenant commercial building — plenty of them around Victoria Street and the Cambridge industrial parks — your camera traffic may be sharing infrastructure with other businesses. That is exactly what encryption is for, and we treat it as mandatory there.
If you run cameras on a farm or rural property out past Guelph, remote viewing over a cellular or fixed-wireless link means your footage is crossing networks you do not control. Same answer: encrypt it, and use a strong password on the remote viewing account specifically.
And if your cameras are on the same network as your point-of-sale terminals or office computers — common in retail and small shops — put them on a separate network segment or VLAN. A camera recorder is a computer, and it should not be a route into the rest of your business.
And do your firmware updates before winter, while someone can still physically reach the recorder — a failed update in January, with the box in an unheated garage, is a bad afternoon.
FAQ
Does encryption slow my cameras down or reduce image quality?
Not noticeably on any modern recorder. Encryption adds a small processing overhead that recorders made in the last several years absorb without affecting frame rate. Image quality is unchanged — encryption does not re-compress the video, it only scrambles it.
My cameras are not connected to the internet. Do I still need encryption?
It still helps, but it is less urgent — an air-gapped system has far smaller exposure. The catch is that few systems stay air-gapped. The moment someone wants the cameras on their phone, the system goes online, usually without anyone revisiting the encryption question.
How do I know if my system has already been accessed?
Most recorders keep a log of user logins, including the IP address and time. Look for a log or history page in the settings and check for logins you do not recognize, particularly at odd hours. If you find any, change every password immediately and update the firmware before doing anything else.
Not sure what your system is doing?
We offer a free site survey across Kitchener, Waterloo, Cambridge and Guelph. We will check your encryption settings, your passwords and your firmware, tell you plainly which of the three layers you are missing, and give you a written quote if anything needs changing. Call 226-227-7966 or get in touch here.