The first practical step is to take control of the router and modem, then change the default administrative password immediately. Once that is done, update the firmware and confirm the wireless network is using WPA2 with a long, unique passphrase. Starting with the network gateway matters because every other device depends on that trust boundary.
Why the router and modem come first
The home network gateway is the trust boundary that everything else depends on. If the router or modem still uses factory defaults, an employee may be “securing” laptops and phones while the real entry point stays exposed. Changing the administrative password first closes the easiest path to takeover and gives every later step a stable foundation.
That sequence matters because default admin credentials are widely known, often reused across devices, and frequently targeted before any device-level hardening starts. If an attacker can administer the gateway, they can change DNS, create remote access, weaken Wi-Fi settings, or observe traffic paths that make every downstream control less reliable.
What the first hardening steps should establish
Once administrative access is under control, the next priority is to bring the gateway up to a safe baseline. Updating firmware reduces exposure to known flaws in the router or modem software, while WPA2 with a long, unique passphrase raises the bar against casual interception and unauthorized joins on the wireless network.
These steps are not interchangeable. Firmware updates address weaknesses in the device itself, while the wireless settings protect the local access layer. A secure password on the admin console does not compensate for outdated firmware, and updated firmware does not help if the Wi-Fi still accepts weak or shared credentials.
Employees should also treat this as a sequence, not a one-time checklist. First secure the management plane, then the wireless access plane, then verify that connected devices are using the corrected settings rather than old saved credentials or secondary guest networks that were left unchanged.
What “secured enough to trust” looks like at home
A home network is not really “secured” when one setting looks improved. It is secured when the gateway no longer exposes default administration, the firmware is current, and the wireless network uses a modern encryption mode with a password that is not reused elsewhere. That combination reduces the chance of trivial takeover and helps protect work traffic, personal accounts, and smart home devices that share the same network.
Employees should assume the weakest home device can become the easiest pivot point. A printer, camera, or old tablet connected to an insecure router can create a path into the broader home environment, and a compromised gateway can undermine even well-managed endpoints by steering traffic or enabling unauthorized access.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
NIST SP 800-53 Rev 5 sets the technical controls, while ISO/IEC 27001:2022 defines the regulatory obligations.
| Framework | Control / Reference | Relevance |
|---|---|---|
| NIST SP 800-53 Rev 5 | IA-5 — Authenticator Management | Router admin passwords and Wi-Fi credentials are authenticators that must be changed and maintained. |
| CM-6 — Configuration Settings | Secure home router setup depends on changing insecure default configuration values and enforcing safer settings. | |
| SI-2 — Flaw Remediation | Firmware updates on the router and modem are flaw remediation for known device weaknesses. | |
| Recommendation — Rotate default and weak credentials, then manage router and Wi-Fi authenticators like any other privileged access. Harden the gateway configuration by replacing defaults and applying secure baseline settings. Patch the gateway firmware promptly to remove known exploitable flaws. | ||
| ISO/IEC 27001:2022 | A.8.9 — Configuration management | Securing the home gateway requires controlled changes to default device and wireless settings. |
| A.8.8 — Management of technical vulnerabilities | Updating router firmware directly addresses technical vulnerabilities in the network gateway. | |
| Recommendation — Apply controlled configuration changes to the router and wireless network before trusting the connection. Update gateway firmware to reduce exposure to known technical vulnerabilities. | ||
Practitioner Guidance
What to prioritise: Treat the router and modem as the first remediation target, not the last. If you only have time for one action before connecting work devices, change the default administrative password and confirm you can still log in with the new value.
What to verify: Confirm that firmware updates actually applied, the wireless network is not still advertising an older insecure mode, and no unknown devices remain connected after the password change. If the gateway cannot be updated or the admin password cannot be changed cleanly, treat that as a higher-risk home setup.
Common mistake: Replacing the Wi-Fi password without securing the router’s admin interface. That leaves the control plane exposed, which is the part most likely to let an attacker undo the rest of the hardening.
Practitioner takeaway: The first goal is not perfection, it is to remove the easiest takeover path at the network boundary so every later device and account control rests on a trustworthy gateway.
Related resources from NHI Mgmt Group
- Should organisations prioritise external exposure or internal credential governance first?
- What is the difference between network zero trust and identity-first zero trust?
- How should security teams reduce remote-work identity risk for employees using home offices?
- How should security teams handle trust when employees work from home and the office?
Deepen Your Knowledge
Reviewed and updated by the NHIMG editorial team on September 28, 2026.
NHI Mgmt Group — the #1 independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org
