Share a subset of Data Safely

Claro wants to share anonymised credit trend data with a financial research partner — but the underlying CREDITSCORES table also contains userid and email, which are PII and must not be shared. A team member creates a standard view that selects only the non-PII columns and adds this view to the share. A security review flags this approach as a risk.

Why is sharing a standard view a security risk in this context, and what should be used instead?