The Hellenic Data Protection Authority, with its decision 4/2022, punished COSMOTE for the major breach of privacy in 2020. The Hellenic Data Protection Authority’s decision 4/2022 can be found on the Hellenic Data Protection Authority’s website at the following link
https://www.dpa.gr/sites/default/files/2022-01/4_2022%20anonym%20%282%29_0.pdf
You can also view and download it below. The version is NON-CONFIDENTIAL.