Network Access: Do not allow anonymous enumeration of SAM accounts and shares

752e0588-decf-451b-9fef-cc3235765d54

An unauthorized user could anonymously list account names and shared resources and use the information to attempt to guess passwords or perform social-engineering attacks.

https://docs.microsoft.com/en-us/windows/security/threat-protection/security-policy-settings/network-access-do-not-allow-anonymous-enumeration-of-sam-accounts-and-shares