The difference between confidentiality and anonymity
Launch library · evergreen read

Confidentiality means a whistleblower's identity is known to the people handling their report but is deliberately kept from others, including the person the complaint concerns, while anonymity means no one, including the organisation itself, ever learns who made the report at all. The two terms are often used loosely, but the distinction matters enormously in practice.
A confidential report usually allows for a more thorough investigation, since investigators can go back to the source to clarify a detail or ask a follow up question that a genuinely anonymous report simply cannot support. That practical advantage is one reason many schemes actively encourage confidential rather than fully anonymous reporting.
Choosing between the two often comes down to how much a reporter trusts the organisation's ability to actually protect their confidentiality in practice. Where that trust is genuinely low, anonymity offers stronger personal protection, even though it usually comes at some real cost to how effectively the underlying concern can be investigated.