This Practice Note provides an overview of data privacy-related putative class action lawsuits under federal and state laws, including the Electronic Communications Privacy Act (ECPA), the Computer Fraud Abuse Act (CFAA), the Video Privacy Protection Act (VPPA), the Telephone Consumer Protection Act (TCPA), the Fair Credit Reporting Act (FCRA), the Fair and Accurate Credit Transactions Act (FACTA), the Driver's Privacy Protection Act (DPPA), the California Invasion of Privacy Act (CIPA), the California Online Privacy Protection Act (CalOPPA), the California Comprehensive Computer Data Access and Fraud Act (CCCDAFA), the Michigan Preservation of Personal Privacy Act (PPPA), the Illinois Biometric Information Privacy Act (BIPA), state genetic privacy statutes, and common law claims. This Note also describes key issues litigants may face in bringing and defending these claims.