Controller’s notification to the Commissioner (Article 29)

In the event of a personal data breach, the controller must notify the Commissioner as soon as possible, and no later than 72 hours after becoming aware of the breach. Notification is not required if the breach is unlikely to result in a risk to the rights and freedoms of data subjects. If the notification is not made within the 72-hour timeframe, the controller must provide an explanation for the delay.

The notification to the Commissioner must include, at a minimum:

• A description of the nature of the personal data breach, including, where possible, the categories and approximate number of data subjects affected, as well as the categories and approximate number of personal data records involved;
• The name and contact details of the DPO or another relevant contact point;
• A description of the likely consequences of the personal data breach;
• A description of the measures taken or proposed to address the breach, including, where applicable, measures to mitigate its potential adverse effects.

If all of the required information is not available at once, it may be provided in stages, as soon as possible.

The controller must document all personal data breaches, including the details, impact, and corrective actions taken, to enable the Commissioner to verify compliance. The Commissioner shall respond to the notification in line with their authority. The Commissioner may also instruct the controller to notify the affected data subjects of the personal data breach if the breach is likely to pose a high risk to their rights and freedoms, and if the controller has not already done so, as outlined in the section below.

Controller’s notification to the data subjects (Article 29)

The controller must inform data subjects if the risks to their rights and freedoms resulting from the data breach are likely to be high, by providing the information as outlined in the notification to the Commissioner above. However, notification to data subjects is not required in the following cases:

• The controller has implemented appropriate technical and organizational protective measures, such as encryption, which were applied to the personal data affected by the breach;
• The controller has taken additional steps to reduce the risk of harm to the rights and freedoms of data subjects;
• The controller publishes the notice or takes other similar actions to notify data subjects of the breach in a uniform and effective manner, where notifying each individual data subject would impose a disproportionate burden on the controller.

Processor’s notification to the controller (Article 29)

The processor shall notify the controller immediately after becoming aware of any personal data breach.