CISA Question #400: Real Exam Question with Answer & Explanation

The correct answer is C: Changing default passwords. The most important security measure for protecting Internet of Things (IoT) devices from potential cyberattacks is changing default passwords. Many IoT devices come with default, easily guessable passwords, which are a common target for attackers. Changing these passwords to stro

Submitted by carter_n· Apr 18, 2026Protection of Information Assets

Question

Which of the following security measures is MOST important for protecting Internet of Things (IoT) devices from potential cyberattacks?

Options

AConfirming firmware compliance to current security requirements
BReviewing and updating the network diagram on a regular basis
CChanging default passwords
DLogging and monitoring network traffic

Explanation

The most important security measure for protecting Internet of Things (IoT) devices from potential cyberattacks is changing default passwords. Many IoT devices come with default, easily guessable passwords, which are a common target for attackers. Changing these passwords to strong, unique ones significantly reduces the risk of unauthorized access and helps secure the devices from cyberattacks.

Topics

#IoT Security#Cybersecurity Best Practices#Password Management#Device Hardening

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