Most Secure Security Camera Setup: Signs It Was Hacked and How to Lock It Down

11 min read · Oct 20, 2026

There is no such thing as a camera that cannot be broken into. The most secure security camera is the one whose owner has closed the easy doors: a unique account password, a device password changed from the default, a shared list that contains only people you trust, current firmware, and a router that is not wide open. Most "my camera was hacked" stories turn out to be one of those doors left open, or a normal feature that looked spooky. This guide explains what each warning sign usually means, how to check it, and the lockdown checklist to run either way.

First, do not panic: what the common "hacked" signs usually mean

Before you change anything, work out what you actually saw. Several normal behaviours look alarming the first time.

The camera moves on its own

On pan-and-tilt models, movement without anyone touching the app has a few ordinary causes:

Motion tracking. Many models can follow a moving person or car. If it is switched on, the camera turns whenever something moves in view, and then may return to a home position.
Cruise or patrol. Some models sweep between saved positions on a schedule.
Self-check after a reboot. After a power cut or a firmware update, many pan-and-tilt cameras turn through their range once to find their limits, then settle.
Someone else with access turning it from their phone — a family member or a shared user.

Open the device settings and look for tracking, cruise or preset options (names differ slightly by app version and model). If none are on, no power cut happened, and no one in the household was using the app, treat it as a real warning sign and go to the checklist below.

You hear a voice or sound from the camera

Voice prompts. Many cameras speak status messages when they start up, connect to Wi-Fi, or are being set up. A voice at three in the morning after a brief power outage is usually the camera announcing it is back online.
Alarm or siren sounds. If you have set the camera to sound an alarm on motion, a cat walking past can trigger it.
Two-way talk. Anyone who can open live view can usually use the talk button. That includes shared users.

A recognisable human voice speaking to you, when nobody in your household admits to it, is the clearest sign that someone else has access. Act on it straight away.

The lights click or change at dusk

A faint click and a picture that turns black and white in the evening is the day/night switch moving the infrared filter. A red glow around the lens at night is the infrared light. Neither has anything to do with someone watching.

Unknown viewers, devices or log-ins

This one matters. If the app shows the camera shared to an account you do not recognise, or you were signed out with a message about another device, someone else is using either your account or your camera. Do not ignore it.

The camera feels slow or your data use jumped

Slow live view is nearly always a weak Wi-Fi signal or a busy network. A big jump in mobile data on your own phone usually means you watched more live view than you thought. Neither proves anything alone, but if it appears together with the signs above, take it seriously.

The three ways someone really gets into a camera

Understanding the route in tells you which door to close.

Through your account. Someone knows or guesses the app password, often because it is reused from an email or shopping account that leaked. Whoever holds the account sees every camera on it.
Through the device password. The camera has its own password. If it was never changed from the factory default (often printed in the manual or on a label), anyone who learns the camera's ID and that default may be able to connect.
Through people you already let in. A former partner, an ex-employee, the installer who set it up under his own account, or a relative who was given your login years ago. This is often the easiest route, because nothing has to be broken.

Less commonly, a badly configured router or an outdated firmware version leaves a gap. Those are covered in the checklist too.

The lockdown checklist, in order

Work through this in sequence. The first steps cut off anyone currently inside; the later ones make it harder for anyone to return. Menu names below may differ slightly by app version.

Step 1: Change the account password

Go to your profile or account page in the app and change the password. Make it long, and make it one you use nowhere else. Changing it may sign out other phones that were logged in with the old one — which is exactly what you want. Do not rely on that alone: if the app has a list of signed-in devices or a "sign out everywhere" option, use it. Sign back in on your own devices afterwards.

If you cannot get into the account at all, or the reset code never arrives, follow the guide to a forgotten Yoosee password — it explains how to tell the account password from the device password, because the fix for each is different.

Step 2: Change the device password on every camera

Open each camera's settings (usually a gear icon) and look for the security or device password option. Set a new device password that is different from your account password. Do this even if you think it was already changed; you lose nothing by doing it again.

Write the new device password down somewhere safe. It is the password you will need once, months from now, when you reinstall the app or add a new phone.

Step 3: Clean up the shared list

Look at who each camera is shared with. Remove anyone you do not recognise, anyone who no longer needs access, and any account you cannot name. If you need to give access back to family, do it person by person, each with their own account — sharing a camera with another phone walks through both methods and why giving out your own login is the weaker one.

A useful rule: if you would change the locks for this person, remove their camera access too.

Step 4: Check who owns the camera

If an installer, shop or previous owner set the camera up, it may still be registered to their account, with you as a shared user. In that case they can see everything and remove you at will. Ask them to remove the camera from their account so you can add it to yours. A factory reset clears the device password and settings, but it may not release a registration held by another account, so the previous owner may still need to unbind it.

Step 5: Update the firmware

In device settings, look for the firmware or device update option. If an update is offered, install it while the camera has a stable connection, and do not unplug it until it finishes and restarts. Then make sure the app on your phone is current from Google Play or the App Store as well. Updates often close security gaps that you will never hear about.

Step 6: Lock down your router

Your camera is only as private as the network it sits on.

Change the router's admin password from the default printed on its label. This is a different password from the Wi-Fi password.
Use the strongest Wi-Fi security your router offers (WPA2 or WPA3), with a long Wi-Fi password, and change it if many visitors have had it over the years.
Remove port-forwarding rules you did not create or no longer need. On most setups the app connects to the camera without any port forwarding, so an old rule left by a previous installer only adds risk. If you are unsure whether you rely on one, note it down before removing it.
Turn off remote router management unless you actively use it.
Consider a separate network for cameras. Many routers offer a guest or second network. Putting cameras there keeps them apart from your computers and phones.
Update the router's firmware as well, from its admin page.

Step 7: Secure the phones that hold the app

Anyone who picks up an unlocked phone with the app open can watch your cameras. Use a screen lock on every phone and tablet signed into the account. If a phone is lost or sold, change the account password straight away; this may sign it out, and if the app lists signed-in devices, remove it there too. Before passing on an old phone, sign out of the app and reset the phone.

Step 8: Think about physical access

A camera within reach can be unplugged, have its memory card removed, or be factory reset with its reset button. Mount it high enough that nobody can touch it without a ladder, and point at least one camera at the spot where the others are mounted. For any work involving mains wiring, a ladder or a roof, switch off the power first and use a qualified electrician where the job needs one.

What about the most secure doorbell camera?

People looking for the most secure doorbell camera face the same rules, with two additions. A doorbell sits at arm's height outside your door, so physical tampering is easier: check whether your model has a tamper alarm or a security screw, and use it. And a doorbell often lets visitors talk to whoever answers in the app, so keep the shared list for the doorbell especially short — anyone on it can speak to people at your door. Beyond that, the brand and the box matter far less than the steps above.

Habits that keep it secure afterwards

Security is not a one-time job. A few small habits keep the door closed:

Review the shared list whenever life changes — a move, a breakup, a staff departure, the end of building work.
Accept firmware and app updates instead of postponing them for months.
Read your alerts. An unexpected "logged in on another device" message is useful information, not noise.
Keep the account and device passwords different, and stored somewhere real, such as a password manager.
Do a quick monthly look at the settings you care about. If you are not sure where each option lives, the tour of every main setting in the Yoosee app shows what each menu does.

When to get help

Some situations go beyond what you can fix from your phone:

You cannot sign in at all and recovery fails. Work through the checks for Yoosee login problems first; many "hacked" accounts turn out to be a wrong country code or an old app. If that does not solve it, contact the seller or customer support, ready to prove you own the camera.
Someone is speaking to you through the camera or clearly watching you, and you cannot identify them. Unplug the camera, change your passwords from a different device, and if you feel threatened, contact the police where you live.
You suspect a former partner or employee is watching. Remove their access, change both passwords, and consider a factory reset. If it involves harassment, keep notes and screenshots and check local rules on reporting it.
The camera behaves strangely even after a reset and fresh setup. It may be faulty; contact the seller.

Frequently asked questions

Can someone watch my camera without me knowing?

Not without a way in, and the usual ways in are quiet: on many cameras nothing on the device shows that someone is watching live. So look at the evidence you can check — the shared list, sign-in alerts, and who owns the camera — rather than waiting for a visible sign.

Will a factory reset remove a hacker?

It cuts off anyone relying on the old device password, but nothing else. It does not change your account password, it may not release the camera from someone else's account, and it does not remove shares on your account. Right after the reset the camera is back on its factory default, so set a new device password during setup — and change the account password too if that was the way in.

Is it safer to keep cameras offline?

A camera with no internet connection cannot be watched remotely by anyone, including you. Some models can record to a memory card without the app being connected, but you lose alerts and remote viewing. For most people, a properly locked-down connected camera is a better balance than going offline.

Should I cover or unplug indoor cameras when I am home?

It is a reasonable privacy habit, and many people simply avoid placing cameras in bedrooms and bathrooms. Some models have a privacy mode that turns the lens away or stops recording; check your model's settings. Otherwise a schedule, or switching the camera off at the plug, does the job.

How do I know if my account password leaked?

You usually cannot know for sure. Unexpected sign-outs, sign-in alerts from other devices and settings you did not change are strong hints. If the same password was ever used on another site, assume it is known and give the camera account its own.