Which of the following describes the most significant risk created by implementing unverified certificates on an IoT portal?

Which of the following describes the most significant risk created by implementing unverified certificates on an IoT portal?
A . The portal’s Internet Protocol (IP) address can more easily be spoofed.
B. Domain Name System (DNS) address records are more susceptible to hijacking.
C. The portal’s administrative functions do not require authentication.
D. Man-in-the-middle (MITM) attacks can be used to eavesdrop on communications.

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Answer: D