STEALIEN

Security ConsultingComprehensive security consulting centered on
structural improvement and response strategy

Comprehensive security consulting that covers your entire service across complex environments spanning mobile, web, and cloud

The standard for advanced security
is fully blocking the threats that matter most

In advanced security environments, simple checks alone cannot stop real attacks. Attackers connect security gaps to intrude through unexpected paths, and as a result, undetected threats lead to service outages and data breaches.

Multi-Dimensional Risk Analysis

We identify information-security and personal-data-protection risks from multiple angles across the administrative, technical, physical, and legal domains.

Sound, Practical Risk Assessment

We support sound decision-making by prioritizing risks in a way that reflects your company's characteristics and business context.

Remediation Guidance You Can Apply Right Away

Rather than simply reporting assessment results, we provide concrete remediation guidance you can apply on the ground immediately.

Do any of these situations sound familiar?

Six representative situations where STEALIEN security consulting delivers the most value.

We had a security assessment, but we don't know how to fix the findings

We're preparing for ISMS certification but don't know where to start

We need to verify that the personal data we hold is managed securely

We need security validation when introducing, developing, or changing information systems

We operate ICT services and are concerned about IT security

We need to explain our current security posture and improvement roadmap to executives

Key Security Consulting Services

We provide comprehensive consulting across four core areas, tailored to your company's security level and circumstances.

COMPLIANCE · Security Compliance

Security Compliance Consulting

SECURITY COMPLIANCE CONSULTING

From Korea's ISMS and ISMS-P to the international ISO/IEC 27001 and 27701 — we support the entire journey of obtaining and maintaining information security management system certifications. The goal is not merely passing the audit, but genuinely raising your security posture.

    • ISMS
    • ISMS-P
    • ISO 27001
    • ISO 27701

    Management System Certification Consulting

    Management System Certification

    We provide end-to-end consulting for obtaining Korea's and the world's leading information security management system certifications. From gap analysis to audit response and post-certification maintenance, Stealien stays with you — building a practical security framework while minimizing the impact on day-to-day operations.

    • KISA ISMS-P — Information security and personal data protection management system certification

    • KISA ISMS — Information security management system certification

    • ISO/IEC 27001 — International standard for information security management systems

    • ISO/IEC 27701 — International standard for privacy information management systems

    • Gap Analysis — Assessing your current posture against certification criteria

    • Audit Response — Handling certification auditors and remediating findings

    • Post-Certification Care — Annual maintenance and recertification audit support

Consulting Process — STL-CSCM Methodology

STEALIEN Cyber Security Consulting Methodology — delivered stage by stage according to a proven methodology.

Consulting Methodology Stages and Tasks

  • 100Project Management
    • PMProject Management
  • 200Environment Analysis
    • ENVEnvironment Analysis
    • ASTAsset Analysis
  • 300Vulnerability Analysis
    • MGTAdministrative Review
    • PHYPhysical Review
    • TECTechnical Review
    • PRIPersonal Data Review
    • COMLegal Review
  • 400Threat Assessment
    • RSKThreat Assessment
  • 500Countermeasure Planning
    • MEASafeguard Planning
    • MASMaster Plan
  • 600Implementation Management
    • POLPolicy Development
    • IMPImplementation Review
    • EDUTraining
    • AUDSecurity Audit
    • CERCertification Support

Project Management (PM, 100) runs continuously throughout the entire consulting process.

We guarantee consulting quality through the deliverables and implementation reviews at each stage, and drive systematic security improvement by reinforcing the links between stages.

Expected Benefits

The tangible business value you gain from STEALIEN security consulting.

Proactive Incident Prevention

By blocking real intrusion paths, we minimize the likelihood of a breach.

Eliminating Compliance and Penalty Risk

We proactively address the threat of punitive penalties under tightening security regulations.

Efficient Security Investment

By allocating resources according to priority, we maximize the return on your security investment.

Security consulting proven across diverse core industries

We have successfully delivered security consulting across a wide range of industries, including finance, fintech, platforms, and security infrastructure.

* Some clients are omitted at their request for confidentiality.

Frequently Asked Questions

Get integrated security validation from world-class ethical hackers

Security risks are surging across the administrative, technical, physical, and legal domains. We'll design a practical security framework together that fits your service architecture and environment.