Why Smart Home Security Deserves Regular Attention

Smart home devices — from doorbell cameras to connected thermostats — add real convenience, but each one represents a network endpoint that can be targeted. Unlike a laptop, many smart devices run quietly in the background for years without receiving the same security scrutiny users apply to their phones or computers.

The good news is that most vulnerabilities in home automation setups are preventable with straightforward habits. This checklist walks you through the key areas to audit, whether you're setting up your first smart device or reviewing an established system. For a broader look at what these devices actually protect against — and where their limits are — see our companion piece on what connected locks, cameras, and sensors actually protect against.

Work through the checklist below at your own pace. Most items take only a few minutes each.

Required

Password Manager

Generates and securely stores unique, strong passwords for every smart home account and platform.

Required

Router Admin Panel

Used to configure network segmentation, update router firmware, and manage security settings like WPA3 and UPnP.

Required

Manufacturer Device Apps

Required to check and apply firmware updates, manage device permissions, and enable two-factor authentication.

Optional

Network Scanner App

Helps you see every device currently connected to your network so nothing is overlooked during your audit.

Your Smart Home Security Checklist

The checklist is organized into four logical phases: network foundation, device-level controls, account security, and ongoing maintenance. Tackle them in order the first time through; after that, the maintenance section is the one to revisit periodically.

Network Foundation

Change your router's default admin username and password to something unique and strong before connecting any smart devices. Must
Enable WPA3 encryption on your router; if your hardware only supports WPA2, use WPA2-AES rather than the older TKIP option. Must
Create a separate Wi-Fi network (often called a guest or IoT network) exclusively for smart home devices, keeping them isolated from computers and phones. Must
Disable remote management on your router unless you have a specific, ongoing need for it. Should
Enable your router's built-in firewall if it isn't already active by default. Must

Device-Level Controls

Update firmware on every smart device during initial setup and re-check for updates at least every three months. Must
Enable automatic firmware updates where the option is available and trustworthy. Should
Disable Universal Plug and Play (UPnP) on your router, as it can allow devices to open ports without your knowledge. Should
Turn off any device features you don't actively use — such as remote access, voice control, or Bluetooth — to reduce your attack surface. Should
Review the permissions each device app requests; deny access to location, contacts, or microphone if the function doesn't require it. Should
Factory-reset any device before disposing of or reselling it to remove stored credentials and data. Must

Account & Credential Security

Use a unique, strong password for every smart home app and platform account — never reuse passwords across services. Must
Enable two-factor authentication (2FA) on every platform that supports it, prioritizing cameras, locks, and hub accounts. Must
Store credentials in a reputable password manager rather than writing them down or saving them in plain text. Should
Audit which family members or guests have access to shared devices and revoke access for anyone who no longer needs it. Should

Ongoing Maintenance

Conduct a full device inventory every three to six months; remove or fully disable any devices you no longer use. Must
Rotate your IoT network password at least once a year, or immediately after sharing it with a contractor or visitor. Should
Review app notification settings so that unusual access attempts or login alerts are visible to you in real time. Should
Check the manufacturer's support page for devices that are approaching or past their stated end-of-support date, and plan replacements accordingly. Should
Back up your hub or controller configuration settings if your platform supports export, so you can restore quickly after a reset. Nice to have
Consider enabling network-level monitoring (available on some routers and security appliances) to flag unfamiliar devices or unusual traffic patterns. Nice to have

End-of-Support Devices Are a Hidden Risk

Smart home devices that no longer receive firmware updates from their manufacturer will never receive patches for newly discovered security flaws. Once a device reaches end-of-support, it becomes an increasingly easy target over time. Check manufacturer support pages and factor end-of-support dates into your purchasing decisions.

If you're new to smart home setups and want to avoid common configuration mistakes before you start, our guide on things that catch new smart home owners off guard is a useful starting point.

Security habits that work well for your smartphone translate directly here, too — the principles in keeping your smartphone secure without turning it into a chore apply across all your connected devices.

Never Reuse Passwords Across Smart Home Accounts

A single compromised password can unlock every service where you've used the same credential. Because smart home platforms control physical access — locks, cameras, garage doors — the consequences of account takeover extend well beyond data loss. Unique passwords for every account, managed with a password manager, are non-negotiable.

Maintaining Security Over Time

A one-time audit is a good start, but smart home security is not a set-and-forget exercise. Device manufacturers release firmware updates on their own schedules, new vulnerabilities are disclosed regularly, and your device roster changes as you add or retire products.

A practical approach: schedule a brief review every three to six months. Check for firmware updates, confirm that guest or IoT network credentials haven't been shared widely, and remove any devices you no longer use. Dormant devices that remain connected and unpatched are an unnecessary risk.

Privacy concerns often come up alongside security questions. For a clear-eyed look at what smart devices actually collect and share, debunking common smart home privacy myths separates fact from fiction. And if you're planning a larger system — or heading away from home for a period — our trip planning tips include guidance on preparing your connected home before you travel.