Article 21 Measures for protection against retaliation
1. Member States shall take the necessary measures to ensure that persons referred to in Article 4 are protected against retaliation. Such measures shall include, in particular, those set out in paragraphs 2 to 8 of this Article.
2. Without prejudice to Article 3(2) and (3)), where persons report information on breaches or make a public disclosure in accordance with this Directive they shall not be considered to have breached any restriction on disclosure of information and shall not incur liability of any kind in respect of such a report or public disclosure provided that they had reasonable grounds to believe that the reporting or public disclosure of such information was necessary for revealing a breach pursuant to this Directive.
3. Reporting persons shall not incur liability in respect of the acquisition of or access to the information which is reported or publicly disclosed, provided that such acquisition or access did not constitute a self-standing criminal offence. In the event of the acquisition or access constituting a self-standing criminal offence, criminal liability shall continue to be governed by applicable national law.