#  Best Practices - IoT Devices 

 



   ![room full of IoT devices](/sites/g/files/omnuum12036/files/styles/hwp_1_1__360x360_scale/public/2025-07/IoTdevices.jpeg?itok=2CKp5sgn) 

 

## Understanding the Security Impact of IoT Devices

The rapid adoption of Internet of Things (IoT) devices, including smart speakers, thermostats, cameras, wearables, and appliances; brings added convenience to daily life, but also introduces unique cybersecurity risks.

This page outlines the most common threats associated with IoT devices and provides practical steps to help you safeguard your privacy and protect your data.



 

##  Common Risks 

SortCategoryWhy It MattersWeak or Default Passwords

Many IoT devices come with pre-set default passwords that are easy for attackers to guess or find online.

Unpatched Software and Firmware

Manufacturers may not always provide regular updates, leaving devices open to known vulnerabilities.

Lack of Encryption

Data transmitted by IoT devices may be unencrypted, making it susceptible to interception.

Poor Network Segmentation

Connecting IoT devices to the same network as sensitive work or personal devices increases the risk that an attack on one device could compromise others.

Data Privacy Concerns

IoT devices often collect and share personal data, sometimes without clear user consent or adequate protection.

Insecure Remote Access

Improperly configured remote access features can allow unauthorized users to gain control over devices.







 

###  Best Practices 

 



#### Change Default Passwords Immediately

- Create strong, unique passwords for every device.
- Use a password manager to keep track of your passwords.

#### Keep Your Devices Updated

- Regularly check for and install software or firmware updates from the manufacturer.
- If available, subscribe to notifications about updates and security patches.

#### Enable Encryption

- Choose devices that support encrypted data transmission.
- Whenever possible, use encrypted network protocols like HTTPS or WPA3.

#### Segment Your Network

- Place IoT devices on a separate Wi-Fi network from your primary computers and smartphones.
- Use your router’s guest network or set up a dedicated VLAN for IoT devices, assigning a reserved IP range via DHCP.
- Create firewall rules to restrict IoT devices to outbound connections only, allowing access only to required manufacturer sites and blocking unnecessary local or internet traffic.

#### Purchase Devices from Reputable Vendors

- Select manufacturers with a good security track record and a clear commitment to updates and ongoing support.



 

 

#### Limit Data Collection and Sharing

- Review the privacy settings for both devices and associated mobile apps; restrict unnecessary data collection or permissions.
- Regularly check and disable features and services you don’t use. Many devices require app access for initial setup but do not need continued access to your data afterward.

#### Manage Remote Access Carefully

- Disable remote access features unless absolutely necessary.
- If remote access is required, enable strong authentication and use secure protocols.

#### Monitor Device Activity

- Regularly review device logs or usage reports, if available, for any unusual behavior.
- Set up alerts for suspicious behavior when possible.

#### Dispose of Devices Securely

- Before discarding or selling an IoT device, reset it to factory settings to remove all personal/business data.

#### Stay Informed

- Keep up to date with security news, vulnerabilities, and recalls related to your IoT devices.



 

 

 

 

##  Related Resources 

[1Password Password Manager](https://www.huit.harvard.edu/password-manager)

[National Cybersecurity Alliance - "7 Tips For A Safer Internet of Things"](https://www.staysafeonline.org/articles/7-tips-for-a-safer-internet-of-things)

[Get Help](https://privsec.harvard.edu/get-help)