ICS/SCADA Cybersecurity — Question 14

The vulnerability that led to the WannaCry ransomware infections affected which protocol?

Answer options

• A. Samba
• B. None of these
• C. RPC
• D. SMB

Correct answer: D

Explanation

The correct answer is D, SMB, as WannaCry exploited a vulnerability in the Server Message Block (SMB) protocol to spread across networks. Options A (Samba) and C (RPC) are incorrect because they are not the protocols that were exploited in this particular attack, and B (None of these) is also wrong since SMB is indeed the protocol involved.