Yes, ad blockers are legal in Maryland, but their use is constrained by state and federal laws addressing consumer protection, copyright, and deceptive trade practices. The Maryland Consumer Protection Act (MCPA) and federal statutes like the Computer Fraud and Abuse Act (CFAA) impose limits on circumvention of digital content access controls. Courts have not yet ruled on ad blockers under Maryland law, but recent 2026 guidance from the Maryland Attorney General’s Office suggests scrutiny of anti-adblock tools that interfere with contractual terms or impair website functionality without disclosure.
Key Regulations for Ad Blockers in Maryland
- Maryland Consumer Protection Act (MCPA): Prohibits deceptive acts, including software that disrupts a website’s intended user experience without clear notice. Violations may trigger enforcement by the Maryland Office of the Attorney General.
- Computer Fraud and Abuse Act (CFAA): Federal law criminalizes unauthorized access to computer systems. Ad blockers that bypass paywalls or circumvent access controls may risk liability if deemed to exceed authorized use.
- Website Terms of Service (ToS): While not a statute, Maryland courts often enforce ToS agreements. Ad blockers that violate these terms—such as those disabling anti-adblock scripts—could expose users to breach-of-contract claims under state contract law.
Local enforcement remains inconsistent, but the 2026 AG guidance signals a shift toward requiring transparency in ad-blocking practices. Websites operating in Maryland may deploy anti-adblock measures, but users should review ToS and avoid tools that circumvent technical protections without disclosure to mitigate legal exposure.