LGPD and AI: what every lawyer needs to know

The intersection of AI and LGPD (Brazil's data protection law) is one of the most critical topics for law firms in 2026. Using artificial intelligence tools without understanding the data protection implications is a risk no firm can afford to take.

The golden rule: never enter sensitive client data into public AI tools. This includes full names, tax IDs, identifiable case details, or any information that could compromise the data subject's privacy. Always anonymize or use fictitious data for training and testing.

Second crucial point: make sure the AI tools you use have adequate security certifications, such as ISO 27001, and that data is processed on LGPD-compliant servers. Enterprise tools, such as Claude for Enterprise or on-premise solutions, offer far superior guarantees compared to free versions.

Third aspect: document everything. Maintain a data processing record that includes which AI tools you use, for what purposes, what data is processed, and what security measures are implemented. This is not just good practice — it is a legal requirement under the LGPD for data controllers.