Brazil BACEN Resolution No. 4,893 — Cybersecurity Regulation

Overview

Brazil BACEN Resolution No. 4,893 is a regulatory framework that establishes mandatory cybersecurity requirements for financial institutions and other entities regulated by the Central Bank of Brazil. Its primary goal is to strengthen the security posture of the financial sector by ensuring effective management of cybersecurity risks and protection of sensitive information.

Issued by the Central Bank of Brazil (Banco Central do Brasil), this regulation applies to banks, payment institutions, and other licensed organizations operating within Brazil's financial system. The resolution mandates comprehensive risk management practices, the implementation of security controls, incident response planning, and oversight of third-party service providers to ensure ongoing compliance and operational resilience.

Organizations integrate BACEN Resolution No. 4,893 requirements into existing security governance and risk management programs by conducting regular risk assessments, developing internal security policies, monitoring incidents, and aligning procedures with both local regulatory obligations and international standards.

Why it Matters

BACEN Resolution No. 4,893 establishes a comprehensive foundation for cybersecurity risk management within Brazil's financial sector, ensuring stronger protection and regulatory compliance.

Key benefits include:

Strengthen cybersecurity governance

Foster robust oversight, leadership, and accountability for cybersecurity in alignment with the Central Bank of Brazil's requirements.

Enhance regulatory alignment

Support conformity with both national and international standards, reducing the risk of regulatory penalties and compliance gaps.

Promote operational resilience

Ensure the continuity of financial services by requiring effective incident response plans and continual risk assessment processes.

Increase audit readiness

Facilitate efficient preparation for inspections and audits through documented policies, controls, and regular security monitoring.

Improve data protection practices

Safeguard sensitive client and organizational data by mandating strict access controls and ongoing monitoring of cyber threats.

How it Works

Brazil BACEN Resolution No. 4,893 is structured as a set of governance domains and control families that establish minimum requirements for ICT governance, risk management, information security, operational resilience, and incident reporting. The regulation outlines proportionality criteria so controls and maturity expectations scale with institution size and systemic importance.

Financial institutions implement the resolution by mapping its control families to internal security controls and policies, conducting risk assessments and vendor due diligence, and embedding monitoring and testing into operations. Organizations establish incident response procedures and regulatory reporting workflows, perform periodic audits and exercises, and maintain evidence and metrics to demonstrate compliance.

Key Elements

Cybersecurity Governance Structure

Establishes leadership roles, responsibilities, and oversight requirements for managing information security within regulated organizations.

Risk Assessment Processes

Outlines methodologies for identifying, evaluating, and prioritizing cybersecurity threats relevant to financial operations and assets.

Internal Security Policy Framework

Describes the requirements for developing, maintaining, and updating security policies in accordance with regulatory mandates.

Incident Response and Management

Specifies processes for detecting, reporting, and remediating cybersecurity incidents and breaches affecting regulated entities.

Third-Party Risk Oversight

Defines controls and ongoing assessment mechanisms for monitoring external service providers and associated security risks.

Access and Information Control Measures

Details protocols for safeguarding sensitive data through logical, physical, and user access restrictions across systems.

Framework Scope

BACEN Resolution No. 4,893 is adopted by financial institutions, payment companies, and regulated entities within Brazil's financial system. The framework governs controls for information systems, third-party service providers, and sensitive data.

Framework Objectives

Brazil BACEN Resolution No. 4,893 aims to enhance cybersecurity and risk management across financial institutions regulated by the Central Bank of Brazil.

Strengthen governance and oversight of cybersecurity and information security controls

Establish effective risk management to reduce cybersecurity threats and vulnerabilities

Safeguard sensitive financial and customer data through robust data protection measures

Support regulatory compliance with Central Bank of Brazil requirements and international standards

Enhance operational resilience by improving incident readiness and response capabilities

Promote continual improvement and audit readiness within cybersecurity management programs

Common Framework Mappings

Mapped frameworks include:

Digital Operational Resilience Act (DORA)

ISO/IEC 27001

ISO/IEC 27002

Lei Geral de Proteção de Dados (LGPD)

NIST Cybersecurity Framework

NIST SP 800-53

SOC 2

SWIFT Customer Security Programme (CSP)