How to Secure Your Smart Home Devices From Hackers

Connected lights, cameras, speakers, televisions, doorbells and security systems have become ordinary parts of Australian homes. They add convenience, but each device can also create another route into your Wi-Fi network, personal accounts and private routines. A weak password on a smart plug may seem harmless, yet poorly protected equipment can expose information about when people are home, what they say and how the household operates.

Securing a smart home is less about buying expensive technology and more about managing settings carefully. Strong account protection, timely updates, a well-configured router and sensible privacy choices can significantly reduce the risk of hacking. The same approach works in a Sydney terrace, a Melbourne apartment, a Brisbane family home or a regional property using a fixed wireless NBN connection.

Start with the home network

The router is the main gateway between connected devices and the internet, so it deserves attention before individual gadgets. Change the administrator username and password if the manufacturer allows it, and replace any default Wi-Fi password with a long, unique passphrase. Avoid names, birthdays, street numbers and other details that neighbours or visitors could guess.

Use WPA2 or WPA3 encryption, depending on what the router supports. WPA3 offers stronger protection for newer equipment, while WPA2 remains widely used. Disable outdated options such as WEP. The router’s firewall should remain enabled, and remote administration should generally be turned off unless there is a specific need and strong additional protection.

Many Australian households use routers supplied by an internet provider, including equipment bundled with NBN plans. Provider firmware may be updated automatically, but customers should still check the administration page for security notices and settings. If a household has an older router that no longer receives updates, replacing it is usually safer than relying on a device that has become unsupported.

Give every account stronger protection

A smart device is often controlled through a cloud account rather than directly from the home network. That account may contain camera recordings, location data, payment details or a history of household activity. Use a unique password for every manufacturer, security system and smart-home platform account. A password manager can create and store long passphrases without requiring users to memorise them.

Enable multi-factor authentication wherever it is available. An authenticator app or security key is generally stronger than text-message verification, although SMS protection is still better than a password alone. Review recovery email addresses and phone numbers so an attacker cannot regain access through an abandoned account.

Check which people and apps have access to each service. Remove former household members, old installers and unused integrations. A voice assistant, shopping account or smart television may be connected to other services that can control lights, locks or cameras. Revoke permissions that are no longer needed, especially after selling a device or changing an account password.

Keep firmware and apps up to date

Manufacturers release firmware updates to fix vulnerabilities, improve encryption and correct design flaws. Turn on automatic updates for routers, cameras, phones and smart-home hubs when the option is available. Updates should be installed through the official app or the manufacturer’s website, never through a link in an unexpected email or text message.

Create a simple maintenance routine every few months. Open the relevant apps, check for firmware notices, review login activity and confirm that old devices are still supported. Some products show an end-of-support date; when updates stop, the device becomes a growing security risk even if it continues to function normally.

Be particularly careful with inexpensive imported gadgets sold through online marketplaces. A low price does not necessarily mean poor security, but buyers should look for a named manufacturer, a clear privacy policy, regular updates and accessible Australian support. Australian Consumer Law can provide consumer guarantees for products, but it is still important to check a product’s security record before connecting it to a private network.

Separate vulnerable gadgets from personal devices

A guest network can isolate smart appliances from computers, phones and work equipment. Connect televisions, lights, plugs and appliances to that separate network where practical, while keeping laptops, phones and important storage on the primary network. If an inexpensive gadget is compromised, network separation can limit what an attacker can reach.

Some routers offer a dedicated Internet of Things network or device isolation setting. These features may prevent connected equipment from communicating with one another, although certain products need local communication to work. Test essential functions after changing the configuration, and consult the router manual if a camera, printer or smart speaker stops responding.

A second network is especially useful in shared housing and apartment buildings, where visitors, tradespeople or short-term guests may need Wi-Fi access. Give visitors the guest password rather than the main network password. Change the guest password periodically if it has been widely shared, and avoid displaying the main Wi-Fi credentials on the fridge or in a public area.

Protect cameras, locks and voice assistants

Indoor cameras and video doorbells deserve the highest level of care because they can reveal faces, conversations, children, daily schedules and delivery habits. Position cameras only where necessary, avoid bedrooms and private areas, and activate privacy shutters or scheduled recording pauses. Review cloud retention settings and delete recordings that no longer serve a purpose.

Use end-to-end encryption when a product offers it, but remember that features and terminology vary between manufacturers. Restrict camera access to essential household members and turn on login alerts. A doorbell mounted outside an Australian home may capture neighbours, visitors and public footpaths, so adjust the field of view to collect no more footage than necessary.

Smart locks and garage controllers should have strong, unique credentials and a reliable manual override. Do not leave a spare access code active after a guest, cleaner or tradesperson no longer needs it. For voice assistants, disable unnecessary purchasing features, use a confirmation code for payments and review stored voice recordings. Place assistants away from windows and shared walls where conversations may be overheard.

Privacy law can also matter. Australia’s Privacy Act 1988 regulates many organisations that handle personal information, although household use is generally treated differently from business activity. A small business installing cameras or collecting customer information should consider its privacy obligations and handle footage responsibly. The Office of the Australian Information Commissioner provides guidance for organisations covered by the Act.

Recognise scams and plan for failure

Hackers often target people rather than software. A fake support message may claim that a camera account has been breached and direct the recipient to a convincing login page. Other scams impersonate NBN providers, delivery companies, banks or device manufacturers. Never provide a password, verification code or remote-access permission in response to an unexpected call or message.

Type the official website address manually or open the established app instead of clicking a link. Check the sender’s address, watch for urgent language and be wary of requests to install remote-control software. Scamwatch is an Australian source for reporting scams and checking current warnings. If banking or identity information has been exposed, contact the relevant financial institution promptly and consider reporting the incident to ReportCyber.

Prepare for a lost phone, stolen device or internet outage. Keep recovery codes in a secure location, maintain a current list of important device accounts and know how to reset a compromised product. If a camera or smart lock behaves strangely, disconnect it from the network, change the associated account password from a trusted device, revoke active sessions and contact the manufacturer.

A secure backup plan should include traditional options. Keep a physical key for a smart lock, understand how to operate a garage door manually and avoid making essential heating, medical or safety functions dependent on a single cloud service. Brisbane heat, bushfire disruptions and regional connectivity problems can all make an offline fallback valuable, while dense Sydney and Melbourne apartment buildings may create extra Wi-Fi interference that complicates troubleshooting.

Reviewing a smart home does not require specialist equipment. Begin with the router, replace reused passwords, activate multi-factor authentication and install outstanding updates. Then inspect cameras, speakers, locks and appliances one by one, removing unused accounts and limiting access to the information each device genuinely needs. Make this check part of an annual household routine, and repeat it whenever a device changes hands or a major internet account is replaced.