The solution correctly identifies the method for configuring decoy accounts in Microsoft Defender for Identity. These decoy accounts are known as "Honeytoken accounts." The designated procedure within the Microsoft Defender XDR portal is to navigate to the settings for Identities and use "Entity tags" to specifically tag the desired user accounts as "Honeytoken." Any authentication or service ticket request associated with these tagged accounts, which are expected to be dormant, will trigger a high-priority security alert, thus meeting the goal of setting up accounts to be exploited by attackers for detection purposes.

B. This option is incorrect because the proposed solution accurately describes the standard and officially documented procedure for configuring honeytoken accounts within Microsoft Defender for Identity.

1. Microsoft Learn. (2024). Manage sensitive and honeytoken accounts in Microsoft Defender for Identity. Microsoft Docs. Retrieved from https://learn.microsoft.com/en-us/defender-for-identity/entity-tags.

Reference Details: The section titled "Configure honeytoken accounts" explicitly states: "1. In Microsoft Defender XDR

go to Settings and then Identities. 2. Under Entity tags

select Honeytoken. 3. In the Honeytoken accounts page

enter the honeytoken account name and select the + Add button." This directly validates the solution.

2. Microsoft Learn. (2024). Microsoft Defender for Identity security alerts. Microsoft Docs. Retrieved from https://learn.microsoft.com/en-us/defender-for-identity/security-alerts.

Reference Details: This document lists alerts such as "Suspected honeytoken activity (external ID 2027)

" confirming that activities involving accounts tagged as honeytokens generate specific alerts

which is the primary goal of their configuration.