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The PKI Consortium brings together leading organizations committed to trustworthy digital identities and secure communication.

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CSTI Consulting is a member of the PKI Consortium

CSTI Consulting is a Brazilian boutique technology consultancy specializing in Microsoft Identity and Security infrastructure.

CSTI Consulting operates in the Brazilian enterprise market, serving organizations that rely on Microsoft Identity infrastructure as a critical foundation for their security posture. The firm occupies a niche that is underserved in the Brazilian landscape: deeply technical, PKI-native consulting that goes beyond licensing and surface-level deployment, addressing architecture, governance, lifecycle management, and security hardening at an expert level.

Carlos Siqueira

CTO

Carlos is the CTO at CSTI Consulting and represents the organization at the PKI Consortium.