MiCA, the Markets in Crypto-Assets framework, is the European Union’s rulebook for crypto-assets and the firms that issue, trade, or safeguard them. It sets expectations for authorization, disclosures, governance, reserve management, and operational controls, especially for stablecoins and service providers that hold customer assets or keys.
In cyber security, MiCA matters because compliance depends on secure systems, not just legal paperwork. Firms must protect private keys, enforce strong access control, maintain audit logs, reconcile assets accurately, and be able to report incidents and operational failures. Attackers often look for weaknesses in custody workflows, approval chains, or cross-border inconsistencies where controls are uneven. For defenders, MiCA pushes organizations toward tighter governance, better segregation of duties, and clearer accountability across technical and legal teams.