General Info on Schengen Area:

https://home-affairs.ec.europa.eu/policies/schengen-borders-and-visa_en

General Info on Schengen Information System:

https://home-affairs.ec.europa.eu/policies/schengen-borders-and-visa/schengen-information-system_en

Alerts and Data in SIS:

https://home-affairs.ec.europa.eu/policies/schengen-borders-and-visa/schengen-information-system/alerts-and-data-sis_en

Access rights and Data Protection:

https://home-affairs.ec.europa.eu/policies/schengen-borders-and-visa/schengen-information-system/access-rights-and-data-protection_en

Info on SIS Supervision Coordination Group:

https://edpb.europa.eu/csc/about-csc/legal-framework-coordinated-supervision-committee_en

euLISA:

https://www.eulisa.europa.eu/Activities/Large-Scale-It-Systems/Sis-Ii

Info on SIRENE:

https://home-affairs.ec.europa.eu/policies/schengen-borders-and-visa/schengen-information-system/sirene-cooperation_en

Regulation (EU) 2018/1860 of the European Parliament and of the Council of 28 November 2018 on the use of the Schengen Information System for the return of illegally staying third-country nationals

https://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?uri=CELEX:02018R1860-20210803

Regulation (EU) 2018/1861 of the European Parliament and of the Council of 28 November 2018 on the establishment, operation and use of the Schengen Information System (SIS) in the field of border checks, and amending the Convention implementing the Schengen Agreement, and amending and repealing Regulation (EC) No 1987/2006

https://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?uri=CELEX:02018R1861-20210803

Regulation (EU) 2018/1862 of the European Parliament and of the Council of 28 November 2018 on the establishment, operation and use of the Schengen Information System (SIS) in the field of police cooperation and judicial cooperation in criminal matters, amending and repealing Council Decision 2007/533/JHA, and repealing Regulation (EC) No 1986/2006 of the European Parliament and of the Council and Commission Decision 2010/261/EU

https://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?uri=CELEX:02018R1862-20220801

Act CLXXXI of 2012 on the exchange of information in the framework of the second-generation Schengen Information System

https://njt.hu/jogszabaly/2012-181-00-00

Government Decree No. 564/2021. (4/X) on the detailed procedures of the exchange of information in the framework of the Schengen Information System (SIS) in the field of police cooperation and judicial cooperation in criminal matters

https://njt.hu/jogszabaly/2021-564-20-22

Government decree No. 565/2021. (4/X) on the detailed rules for the return of illegally staying third-country nationals and the exchange of information within the framework of the Schengen Information System (SIS) in the field of border traffic control

https://njt.hu/jogszabaly/2021-565-20-22

Commission Implementing Decision (EU) 2017/1528 of 31 August 2017 replacing the Annex to Implementing Decision 2013/115/EU on the SIRENE Manual and other implementing measures for the second generation Schengen Information System (SIS II)

https://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?uri=CELEX:32017D1528