/Docs/G/EU-GDPR-Law-CmA/Sec/Article/34.md
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Ti = Article 34 - Communication of a {_personal_data_breach} to the {_data_subject}
1.sec = When the {_personal_data_breach} is likely to result in a high risk to the rights and freedoms of {_natural_persons}, the {_controller} shall communicate the {_personal_data_breach} to the {_data_subject} without undue delay.
2.sec = The communication to the {_data_subject} referred to in paragraph 1 of this Article shall describe in clear and plain language the nature of the {_personal_data_breach} and contain at least the information and the recommendations provided for in points (b), (c) and (d) of Article 33(3).
3.0.sec = The communication to the {_data_subject} referred to in paragraph 1 shall not be required if any of the following conditions are met:
3.1.sec = the {_controller} has implemented appropriate technical and organisational protection measures, and that those measures were applied to the {_personal_data} affected by the {_personal_data_breach}, in particular those that render the {_personal_data} unintelligible to any person who is not authorised to access it, such as encryption;
3.2.sec = the {_controller} has taken subsequent measures which ensure that the high risk to the rights and freedoms of {_data_subjects} referred to in paragraph 1 is no longer likely to materialise;
3.3.sec = it would involve disproportionate effort. In such a case, there shall instead be a public communication or similar measure whereby the {_data_subjects} are informed in an equally effective manner.
3. = [G/Z/ol-a/s3]
4.sec = If the {_controller} has not already communicated the {_personal_data_breach} to the {_data_subject}, the {_supervisory_authority}, having considered the likelihood of the {_personal_data_breach} resulting in a high risk, may require it to do so or may decide that any of the conditions referred to in paragraph 3 are met.
= [G/Z/ol/s4]