Platform liability
Revision of Article 19 of the Brazilian Internet Civil Rights Framework (Marco Civil da Internet)

The Brazilian digital regulatory landscape has undergone one of its most significant transformations since the enactment of the Brazilian Internet Civil Rights Framework (Marco Civil da Internet – MCI). Following the Federal Supreme Court’s (STF) ruling on Article 19 of the MCI and the issuance of Decrees No. 12,975/2026 and No. 12,976/2026, digital platforms, marketplaces, social media platforms, and application providers now operate under a new liability framework.

This paper provides a practical analysis of the key changes, their regulatory implications, and the compliance challenges that technology companies will need to address in the coming years.