Two kinds of state law
Comprehensive consumer privacy laws
California led with the California Consumer Privacy Act, later expanded by the California Privacy Rights Act and overseen by the California Privacy Protection Agency along with the state attorney general. Other states have followed with their own laws, including Virginia's Consumer Data Protection Act, the Colorado Privacy Act, Connecticut's Data Privacy Act, Utah's Consumer Privacy Act and the Texas Data Privacy and Security Act, among others.
These laws generally apply only to businesses that meet thresholds, which differ by state and are typically based on annual revenue, the number of residents whose personal data is processed, or the share of revenue earned from selling personal data. Many small businesses fall outside them. Some exempt data already covered by certain federal laws, or certain kinds of organizations.
Data security and breach laws
Separately, every state has a data breach notification law, and many have laws requiring reasonable security for personal information. Massachusetts, for example, has regulations requiring a written information security program for personal information about its residents, and New York's SHIELD Act requires reasonable safeguards. These security laws can reach businesses that are too small for the comprehensive privacy laws.