In the age of escalating digital connectivity, our homes are becoming smarter, but probably less secure. The advent of Internet of Things (IoT) devices has opened doors to numerous conveniences, but it has also left us exposed to potential cyber threats. Therefore, fortifying cyber security has become a critical necessity. Here's a curated guide to help you secure your IoT devices and maintain a robust cyber security system.

1. Start with Your Gateway - The Wi-Fi Router

Your Wi-Fi router forms the gateway to your smart home. Its security is paramount in ensuring a secure home network. Here's how you can set up a secure router:

1.1 Rename Your Router

Stick not with the default name of your router, which usually reveals its model and make. This information can assist cybercriminals in identifying the default login credentials, thereby breaching your network. A unique, personal identifier-free name is the way to go.

1.2 Fortify Your Password

The key to your Wi-Fi castle should be unique and complex. A combination of letters, numbers, and symbols can create an impregnable password. A random password generator can assist in creating such a password.

1.3 Opt for Maximum Encryption

Ensure you're using the highest level of encryption available—currently, that's WPA2 (WPA3 is on its way). If your router only supports WPA or WEP protocols, it might be time for an upgrade.

2. Strengthen Passwords Across Devices

Each IoT device requires unique credentials for their associated accounts or mobile apps. Creating unique credentials for every device ensures that a compromise in one does not affect others. A password management tool can assist in storing and creating unique passwords, relieving the burden of remembering multiple passwords.

3. Segregate Your Wi-Fi Network for IoT Devices

Most routers allow the creation of a guest network. By dedicating a separate network solely to your IoT devices, you can safeguard your primary network from potential threats. This means guests can log into a separate network, keeping your local smart home network exclusive to you and your family.

4. Disable Unused Features

Many IoT devices offer features like remote access and Bluetooth connectivity. If you're not utilizing these features, it's wise to disable them. If a feature like voice control on your smart TV goes unused, disable it to prevent potential hacking of active mics.

5. Regularly Update Your Devices

Firmware updates to your Wi-Fi router and updates to your IoT devices may include essential security patches. Regularly check for updates and install them without delay to enhance your network's security.

6. Incorporate Multi-Factor Authentication

Multi-factor authentication (MFA) adds an extra layer of security beyond a mere password. With MFA, any attempt to log into your IoT device requires additional proof of identity in the form of a one-time pin (OTP) or a verification code sent via email or phone. Most IoT devices and their associated mobile apps have this feature, but third-party services like Google Authenticator can provide an extra layer of security.

7. Deploy Next-Generation Firewall (NGFW)

While your router has a built-in firewall, it might not be enough. A next-generation firewall (NGFW) combines the capabilities of a traditional firewall with other security functionalities, making it potent in detecting and thwarting cyberattacks. Though NGFWs are an expensive investment, the level of security they bring to your smart home makes it a worthwhile one.

8. Conduct Regular Security Audits

Regular security audits can help identify potential vulnerabilities in your cyber security system. These audits can help you understand how secure your IoT devices are and what steps you need to take to improve their security.

9. Educate Yourself on Cyber Security Best Practices

Stay updated on the latest trends and threats in cyber security. The more you know, the better you can protect your IoT devices from potential threats.

10. Consider Professional Cyber Security Services

If ensuring cyber security for your IoT devices seems overwhelming, consider seeking professional help. Cyber security services can provide expert guidance and solutions to protect your smart home.

In conclusion, securing your IoT devices is a continuous process that requires vigilance and proactive measures. As we usher in the era of smart homes, let's ensure they're not just smart but secure as well. After all, a secure home is a truly smart home.