DPA Ireland: A Practical Guide to Personal Data Breach Notifications under the GDPR

Includes Case Studies

[..] “This guidance was produced following an analysis of the trends and statistics observed by the Data Protection Commission (DPC) during the first year of the GDPR mandatory breach reporting regime. The statistics and trends analysed covered data breach notifications received in the first year since 25 May 2018, the details of which are set out in a separate information note on breaches trends and statistics published by the DPC.”

https://www.dataprotection.ie/en/guidance-landing/breach-notification-practical-guide

Deep link (October 2019)
https://www.dataprotection.ie/sites/default/files/uploads/2019-10/Data%20Breach%20Notification_Practical%20Guidance_Oct19.pdf