There are many great resources to better understand Data Breach laws.
National Conference of State Legislatures – Security Breach Laws – Forty-seven states, the District of Columbia, Guam, Puerto Rico and the Virgin Islands have enacted legislation requiring private, governmental or educational entities to notify individuals of security breaches of information involving personally identifiable information.
IT Governance – Data Breach Notification Laws by State – Map with detailed information on breach laws by State.
Davis Wright Tremaine LLP – Summary of U.S. State Data Breach Notification Statutes – Interactive map of the USA that provides visual and detailed information.
Perkins Coie LLP – Security Breach Notification Chart – Details on data breach laws by State.
Baker & Hostetler LLP. – Data Privacy Monitor Blog – Updates and analysis on data breach laws.
DLA Piper – Interactive Map Of European Breach Notification Status – Interactive map highlighting breach notification rules and regulations (per country). The colors of the countries below represent a data breach risk index. Red is the highest, orange is high, yellow is elevated, blue is general, and green is low risk.