A security system is also a computer system
Modern alarms, cameras, smart locks and video doorbells are small computers connected to a network. That convenience comes with a trade-off: the thing meant to protect a property can itself be a way in if it is poorly secured. A weak camera account might expose live video. A compromised app account might let someone disarm a system. A neglected device might be used as a stepping stone to other equipment on the same network.
This does not mean connected systems are a bad idea. It means they deserve the same basic care as an email account or a bank login. The advice below is deliberately general, since specific products and threats change, and it makes no promise that any setup is unbreakable.
Use strong, unique passwords
The most common weakness is a password that is short, guessable or reused from another site. When one website suffers a data breach, attackers often try the leaked passwords on other services. Good habits include:
- Use a long passphrase or a randomly generated password for each device and account.
- Never reuse the same password across your camera app, router and email.
- Change every default password during installation. Factory defaults are widely known.
- Consider a reputable password manager so that you do not have to remember dozens of logins.
- Keep user accounts separate, so that each person has their own login rather than sharing one.
Alarm keypad codes follow a similar principle. Avoid obvious sequences such as birthdays or repeated digits, and change codes when people leave. Good keypad entry and code management is part of security too.
Turn on two-factor authentication
Two-factor authentication asks for a second proof of identity, such as a code from an authenticator app or a text message, in addition to your password. Even if a password leaks, an attacker usually cannot log in without the second factor. Where your camera, alarm or cloud account offers it, turn it on, and make sure the recovery email or phone number attached to the account is itself protected. Authenticator apps are generally considered stronger than text messages, though either is better than nothing.
Keep software and firmware updated
Manufacturers release updates to fix security flaws as well as bugs. Devices that never update gradually become easier to attack. Turn on automatic updates if the device offers them, and otherwise check on a regular schedule. This applies to:
- The alarm panel or hub.
- Cameras and recorders.
- The router that connects everything.
- Phone apps used to control the system.
Updates also come to an end. Eventually a manufacturer stops supporting an older model, and if it no longer receives security fixes, plan to replace it rather than continue to rely on it. Keeping a list of devices with install dates makes this easier to notice, and updates are a regular item in a maintenance routine.
Network hygiene
Your home or office network is the foundation. Some sensible steps:
- Secure the router. Change its default admin password, use modern Wi-Fi encryption (WPA2 or WPA3 where the router supports it) and keep its firmware updated.
- Consider setting up a guest network or a separate network for smart devices, so that cameras and sensors are isolated from computers holding personal or business data.
- Be cautious about exposing devices directly to the internet. Features that open ports on your router raise risk, and a reputable remote access method that requires login is generally safer than leaving a camera openly reachable.
- Disable features you do not use, such as unused remote access or old guest accounts.
- Remove devices you no longer use, and reset them to factory settings before selling or discarding them.
- Use a wired connection for recorders and cameras where practical, which also improves reliability.
For a business, these basics matter even more. Customer, employee and payment data may live on the same network as cameras, so separating them is wise. A small company may want an IT professional to review the setup.
Watch your accounts and apps
Cloud storage and a mobile app add convenience and also add accounts to protect. Review who has access periodically: former employees, past tenants, a previous installer or an ex-partner may still be listed. Remove shared access when it is no longer needed, and turn on login alerts if the service offers them. Be wary of emails or texts claiming to be from your camera or alarm provider that ask you to click a link and log in; phishing messages often imitate such services. Go to the official app or website yourself instead.
If you use a monitoring service, ask what protections it applies to its own systems and what happens to your data, which is a fair question to raise before signing a monitoring contract.
Know the signs of trouble
Warning signs that deserve attention include unexpected logins or login alerts, settings you did not change, a camera pointing in a different direction, unusual network activity, devices going offline repeatedly, or notifications you did not trigger. If you suspect a problem, change the passwords on the affected account and your router, sign out of all sessions, update the firmware and, if needed, factory reset the device and set it up again. For a serious incident at a business, seek professional help and check whether you have any legal duty to report it, which varies by place.
Privacy and cybersecurity overlap
Security camera footage is personal information. Protecting accounts also protects the people who appear in the footage. Some places have rules about securing recorded data, so cybersecurity shades into compliance. Limiting who can view stored recordings and deleting what you no longer need reduce the damage if an account is ever compromised.
A short afternoon checklist
- Change default passwords and make each one unique.
- Enable two-factor authentication on every account that supports it.
- Update the router, hub, cameras and phone apps.
- Move cameras and smart devices to a guest or separate network if possible.
- Review who has access to the system, and remove anyone who should not.
- Write down the model, install date and update status of each device.
None of this makes a system impossible to attack. It does make it a harder and less attractive target than the many that still use default passwords.