What is GDPR?
GDPR stand for General Data Protection Regulation (full name of the act: Regulation (EU) 2016/679 of the European Parliament and of the Council of April 27th 2016 on the protection of natural persons with regard to the processing of personal data and on the free movement of such data, and repealing Directive 95/46/EC).
You can read the act in here https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32016R0679&from=PL#d1e1374-1-1
The regulation was put into effect on May 25, 2018 and it applies to all EU member states.
The most important definitions from GDPR:
Controller means the natural or legal person, public authority, agency or other body which, alone or jointly with others, determines the purposes and means of the processing of personal data.
Personal data means any information relating to an identified or identifiable natural person (‘data subject’); an identifiable natural person is one who can be identified, directly or indirectly, in particular by reference to an identifier such as a name, an identification number, location data, an online identifier or to one or more factors specific to the physical, physiological, genetic, mental, economic, cultural or social identity of that natural person.
Recipient means a natural or legal person, public authority, agency or another body, to which the personal data are disclosed, whether a third party or not.
Supervisory authority means an independent public authority which is established by a Member State pursuant to Article 51. In Poland, this supervisory authority is the Personal Data Protection Office https://uodo.gov.pl/en
Processing means any operation or set of operations which is performed on personal data or on sets of personal data, whether or not by automated means, such as collection, recording, organisation, structuring, storage, adaptation or alteration, retrieval, consultation, use, disclosure by transmission, dissemination or otherwise making available, alignment or combination, restriction, erasure or destruction.
Personal data breach means a breach of security leading to the accidental or unlawful destruction, loss, alteration, unauthorised disclosure of, or access to, personal data transmitted, stored or otherwise processed.