Communication of a personal data breach to the data subject

1.   Subject to paragraph 4 of this Article, where a personal data breach as referred to in Article 34 is likely to severely and adversely affect the rights and freedoms of the data subject, Europol shall communicate the personal data breach to the data subject without undue delay.
2.   The communication to the data subject referred to in paragraph 1 shall describe, where possible, the nature of the personal data breach, recommend measures to mitigate the possible adverse effects of the personal data breach, and contain the identity and contact details of the Data Protection Officer.
3.   If Europol does not have the contact details of the data subject concerned, it shall request the provider of the data to communicate the personal data breach to the data subject concerned and to inform Europol about the decision taken. Member States providing the data shall communicate the breach to the data subject concerned in accordance with the procedures of their national law.
4.   The communication of a personal data breach to the data subject shall not be required if:
(a)
Europol has applied to the personal data concerned by that breach appropriate technological protection measures that render the data unintelligible to any person who is not authorised to access it;
(b)
Europol has taken subsequent measures which ensure that the data subject's rights and freedoms are no longer likely to be severely affected; or
(c)
such communication would involve disproportionate effort, in particular owing to the number of cases involved. In such a case, there shall instead be a public communication or similar measure informing the data subjects concerned in an equally effective manner.
5.   The communication to the data subject may be delayed, restricted or omitted where this constitutes a necessary measure with due regard for the legitimate interests of the person concerned:
(a)
to avoid obstructing official or legal inquiries, investigations or procedures;
(b)
to avoid prejudicing the prevention, detection, investigation and prosecution of criminal offences or for the execution of criminal penalties;
(c)
to protect public and national security;
(d)
to protect the rights and freedoms of third parties.