In the companies that make anonymous reports possible, 58 per cent of the first reports were received without identitying the whistleblower. In more than one third of the initial reports received anonymously (38%), however, the reporter discloses his or her identity during the investigation.
The probability that the identity of the whistleblower will become known in the course of the investigation is significantly higher for the general channels (personal visit, letter/fax, e-mail and telephone), while it is significantly lower for web-based reporting channels. The anonymity of whistleblowers is thus more reliably protected with this channel.
Whistleblower anonymity is also more often maintained in companies that communicate a wide variety of content and information regarding their whistleblowing system as well as in successful companies. It can be assumed that broad-based communication is characterised by the maturity of the organisation.