
Consulting services
From industrial operations to complex software products, I support organizations in building and maintaining secure, compliant, and resilient systems. My services cover cybersecurity governance, risk management and technical guidance across all lifecycle stages.
Cybersecurity Strategy & Governance
High-level direction, frameworks, and organizational processes that define how security is managed across the company.
Key services
Cybersecurity lifecycle, policies, and process development
Gap analysis and compliance evaluations
Alignment with ISA/IEC 62443, NIST, and EU CRA
Processes and workflows for threat modelling and risk assessments
Vulnerability management and CVE analysis
Governance, Risk & Compliance (GRC)


Architecture & System Security
Design guidance and review support for secure architectures, focusing on system interactions, interfaces, and operational environments.


Key services
Threat modeling (data flows, trust boundaries, attack paths)
Security architecture design
Translation of ISA/IEC 62443 requirements (-2-4, -3-3, -4-1, -4-2) into architecture and system controls
System hardening guidelines and trust model definition
Network and infrastructure security concepts
OT and ICS security for industrial control systems
Product & Development Security
Practical support that enables engineering teams to apply security in their day-to-day work and throughout the product lifecycle.
Key services
Risk assessment based on threat model
Activities according to your Secure Software Development Lifecycle (SDLC)
Application security guidance and secure coding practices
Secure supply chain management (SBOM, component governance, 3rd party components)
Correct application of cryptographic mechanisms
Practical coaching for implementing and verifying security requirements


Why Work With Me
Bridge Builder
I unite over a decade of software development and architecture with advanced cybersecurity expertise. This dual perspective ensures security is integrated efficiently into your existing design and lifecycle processes — bridging the gap that often lies between development teams and security experts to create solutions that fit seamlessly into real-world product development.
Hands-On Partner
I focus on pragmatic, results-driven cybersecurity. Rather than delivering abstract reports or idealistic recommendations, I work closely with your teams to create solutions that are feasible, efficient, and directly applicable to your business context — ensuring results that work in production, not just on paper.
Clear Translator
Cybersecurity standards and regulations like ISA/IEC 62443 or the EU Cyber Resilience Act can be complex. I translate these frameworks into clear, actionable guidance aligned with your architecture, workflows, and product goals — empowering your development teams to implement security with confidence.


Strong Cybersecurity Focus
My clients count on expertise that is both proven and up to date. With certifications across industrial cybersecurity, architecture, governance, and offensive security, I bring a well-rounded foundation to help you meet compliance goals, manage risks, and strengthen resilience where it matters most.
Industrial Security
Architecture
Governance & Risk Management
Offensive Security


Frank Leitner Cybersecurity Ltda.
CNPJ: 62.779.035/0001-28
Rua Verbo Divino 2001, Torre B - andar 3, Sala 305
Chácara Santo Antônio, São Paulo – SP
CEP: 04719-002
BRAZIL
Phone
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