Maria is a lawyer that has been acting in the defense of consumer rights for over 30 years. She joined the group that founded PROTESTE in 2001 and is now their Institutional Coordinator. PROTESTE is the largest private entity of consumer protection in Latin America with over 2,000 members. Maria is also an author and co-author of several publications on consumer rights, and has blogged about consumer rights in Folha Online. Maria supported the establishment of the Consumer Protection Code (CDC) in 1990.