Toan Nguyen

CTO

Vietnam13 yrs 9 mos experience

Most Likely To SwitchAI Enabled

Key Highlights

Built a 30-member security team from scratch.
Led Red Team operations for critical banking systems.
Designed enterprise-wide cybersecurity strategies.

Stackforce AI infers this person is a Cybersecurity Leader with expertise in Fintech and Telecom sectors.

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Skills

Core Skills

Cybersecurity Incident ManagementSecurity ManagementPenetration Testing

Other Skills

Mobile SecuritySecurity MonitoringIT Risk ManagementProject ManagementCyber Threat Hunting (CTH)Threat & Vulnerability ManagementFraud InvestigationsApplication SecurityMalware AnalysisCloud ComputingNetwork SecurityDevSecOpsSecurity Incident ResponseSecurity OperationsForensic Analysis

About

Cybersecurity leader with 15+ years’ experience across telco, system integration, consulting, and banking, including Viettel, FPT IS, Dasan Zhone, EY, and MSB. I lead a 30-member security team covering Red Team, SOC, Pentest, GRC, AI & Automation in Security, Security Architecture, and Technical Security Control — operating and managing enterprise-wide security solutions. Certified in CISSP, CISA, OSCP, OSCE, CRT, CDP (DevSecOps), and ITIL v4, I blend deep technical expertise with strategic vision to enable secure digital transformation.

Experience

Ey

2 roles

Subject Master Expert

Sep 2020 – Aug 2021 · 11 mos

Security MonitoringIT Risk ManagementThreat & Vulnerability ManagementFraud InvestigationsPenetration TestingDevSecOps+2

Cyber Security Manager

May 2019 – Aug 2020 · 1 yr 3 mos

Delivered cybersecurity consulting, Red Team assessments, and SOC-as-a-Service for financial institutions.
Led security strategy assessments based on NIST, ISO 27001, and CIS frameworks.
Directed incident response and digital forensics engagements across multiple industries.
Built security service offerings, including penetration testing, incident handling, and security strategy advisory for banking clients.

Mobile SecuritySecurity MonitoringIT Risk ManagementProject ManagementFraud InvestigationsApplication Security+8

Maritime bank vietnam

Head of IT Security

Sep 2020 – Present · 5 yrs 6 mos · Hanoi, Hanoi, Vietnam · On-site

Built the IT Security Department from scratch, expanding to a 25-member team across Red Team, SOC, Pentest, GRC, AI & Automation, Security Architecture, and Technical Security Control.
Designed and implemented enterprise-wide cybersecurity strategy aligned with banking regulations and business objectives.
Led Red Team operations, APT simulations, and offensive security programs targeting critical banking systems.
Established and scaled SOC capabilities with integrated SIEM, EDR, NDR, and SOAR automation.
Managed AI-driven automation initiatives for incident response, vulnerability management, and security monitoring.
Reported directly to CIO, overseeing security budgets, roadmaps, and board-level reporting.

Mobile SecuritySecurity MonitoringIT Risk ManagementProject ManagementCyber Threat Hunting (CTH)Threat & Vulnerability Management+14

Dasan zhone solutions vietnam

2 roles

Information Technology Security Manager

Promoted

Aug 2018 – May 2019 · 9 mos

Defined and implemented the company’s information security strategy for telecom and networking product lines.
Developed and enforced security policies, standards, and incident response procedures.
Performed penetration testing and security audits for telecom infrastructure devices (OLT, ONT) before market release.
Integrated security monitoring solutions (SIEM, AD, Proxy, Firewall) into operational environments.
Provided training to R&D teams on secure coding, product hardening, and vulnerability mitigation.

Mobile SecuritySecurity MonitoringIT Risk ManagementProject ManagementThreat & Vulnerability ManagementFraud Investigations+9

Security Expert (Flexible Time)

Sep 2016 – Aug 2018 · 1 yr 11 mos

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Security MonitoringIT Risk ManagementFraud InvestigationsNetwork SecurityPenetration TestingBinary exploit+4

Fpt information system

Information Security Experts/ Team Leader

Sep 2016 – Aug 2018 · 1 yr 11 mos · Ha Noi

Designed and deployed enterprise security solutions (WAF, IAM, SIEM, PIM) for large-scale banking and government projects.
Led penetration testing and Red Team engagements for a national-scale tax management platform, including SAP security assessment and exploitation testing.
Designed and implemented IBM QRadar SIEM for centralized log management and threat detection.
Conducted security architecture reviews for infrastructure and application deployments.
Performed compliance audits for banking, government, and enterprise clients.
Delivered training and knowledge transfer to customer technical teams.

Security MonitoringProject ManagementThreat & Vulnerability ManagementTeam LeadershipApplication SecurityMalware Analysis+6

Viettel group

Security Researcher/Pentester

Jun 2012 – Dec 2016 · 4 yrs 6 mos · Ha Noi

Red Team operations simulating advanced threats against Viettel’s telecom infrastructure, core network, and enterprise systems.
Conducted penetration testing and vulnerability assessments for applications, networks, and systems.
Investigated and mitigated telecom fraud cases (SIM fraud, bypass fraud, 3G), collaborating with fraud management teams to reduce financial loss.
Delivered incident response, digital forensics, and threat hunting for large-scale telco infrastructure.
Developed custom security tools and automation scripts for vulnerability scanning and exploitation.
Recognized with multiple awards for innovative defense systems and high-impact security initiatives.

Mobile SecurityThreat & Vulnerability ManagementFraud InvestigationsTeam LeadershipApplication SecurityMalware Analysis+4