When a newly created IAM user has no IAM policy attached, the user has no permissions to access any AWS resources. In AWS IAM, access is denied by default unless explicitly allowed through policies. Without any attached policies, the user cannot view or interact with any AWS resources in the account.

Key Points:

• IAM follows the principle of least privilege and denies access by default
• Users must have explicit permissions granted through IAM policies
• Without attached policies, users cannot access any AWS services or resources
• This applies to both AWS Management Console and AWS CLI access
• The correct answer is option B: 'Access to all AWS resources will be denied.'