STEALIEN

Pentest / Red Team ServiceReal-world scenarios from an attacker's perspective,
Penetration Testing / Red Team Service

Hands-on security validation that meets advanced persistent threats (APT) and tightening digital financial security regulations head-on, proactively eliminating latent risk

Before a real attack happens,
validate from the attacker's perspective

Countering advanced persistent threats and ever-stricter security requirements calls for hands-on validation from the attacker's perspective. Going beyond simple checks, we expose vulnerabilities and intrusion paths through real attack scenarios, and lower your risk and raise your security maturity with remediation you can act on immediately.

Goal-Oriented Approach

We focus on attack chains that are genuinely exploitable, producing attacker-perspective threat scenarios rather than a mere list of vulnerabilities.

Actionable Remediation

We don't stop at vulnerability counts—we provide code-level remediation guidance so you can put real security improvements into action right away.

Accurate Security Assessment

We complement the limits of automated tools: seasoned experts perform hands-on manual testing for precise results that minimize false positives.

Core service areas

We deliver tailored penetration testing and red team services optimized for diverse IT infrastructures and business environments.

EXTERNAL

Externally Exposed Asset Assessment

Analysis of the external attack surface—domains, IPs, subdomains—and asset identification

  • OSINT
  • Asset Identification
  • Domain Analysis

WEB / MOBILE

Externally Exposed Services

Penetration testing of externally exposed services such as websites and mobile apps

  • Web Vulnerabilities
  • Mobile Assessment
  • API Security

INTERNAL

Internal Network Intrusion & Lateral Movement

After establishing an initial foothold, we validate scenarios for taking over internal systems and the potential exfiltration of critical data

  • Lateral Movement
  • Privilege Escalation
  • Data Exfiltration

3RD PARTY

Third-Party Systems

Analysis of exfiltration and intrusion potential across keyboard security, remote-access systems, VDI, and more

  • Keyboard Security
  • VDI
  • Remote Access

Service Types

Vulnerability Assessment / Penetration Testing / Red Team Service

There are three types, distinguished by assessment depth and objective, so you can choose what fits your security maturity and business environment.

VULNERABILITY ASSESSMENT

Vulnerability Assessment

Service Objective

Comprehensive review of security flaws and regulatory compliance

Methodology

Automated tools + expert checklist

Key Advantages

  • Fast, comprehensive asset checks
  • Objective, quantified security posture
  • Full compliance support (ISMS-P and more)

Best Suited For

  • Regular security reviews
  • Bulk assessment of large-scale infrastructure
  • Companies preparing for certification audits
  • Automated Scanning
  • Checklist
  • Compliance

PENETRATION TESTING

Penetration Testing

Service Objective

Validating real-world intrusion potential and impact

Methodology

Intrusion testing focused on external-facing services

Key Advantages

  • Precise assessment of business-logic vulnerabilities
  • Identification of chained-attack risk
  • Forecasting the impact of an actual incident

Best Suited For

  • Validation before launching a new service or app
  • Systems handling critical information
  • Financial and fintech services
  • Penetration Validation
  • Attack Chaining
  • Fintech & Finance

RED TEAM SERVICE

Red Team Service

Service Objective

Measuring and training the organization's detection and response capabilities

Methodology

Attack scenarios based on advanced persistent threat (APT) modeling

Key Advantages

  • Validating the effectiveness of the Blue Team (security operations)
  • Preparedness for all-around threats including physical and social engineering
  • Security-awareness and response training for staff

Best Suited For

  • Mature security organizations and security operations centers
  • Organizations that need internal-network intrusion defense drills
  • Executive tabletop exercises for APT preparedness
  • APT Simulation
  • SOC Effectiveness
  • Social Engineering

Assessment Methods

Three approaches based on the level of prior knowledge

Depending on the scope of information provided up front, we perform the assessment using one of three methods—or a combination of them.

Black Box

Performed from an external attacker's perspective, conducting the assessment with no prior information—under the same conditions as a real hacker.

  • External Attacker Simulation
  • No Prior Information
  • Real-World Conditions

Grey Box

Different policies can be applied to specific users, all app users, or specific job roles.

  • Insider Threat Assumption
  • Limited Information Used
  • Exfiltration Scenarios

White Box

Based on complete information—source code, design documents, system architecture—we perform highly precise, in-depth testing.

  • Source-Code Based
  • Full Architecture Disclosed
  • Highest Level of Precision

Key Attack Scenarios

Intrusion-path and internal-takeover scenarios run from a real hacker's perspective

External Zone

EXTERNAL ZONE

  • Internet
  • Attacker Simulation
  • OSINT Gathering
Log Collection

DMZ

DEMILITARIZED ZONE

Secondary Firewall
  • Web Server (WAS)
  • Load Balancer
  • DNS Server
  • Mail / Proxy
Log Collection

Internal Zone

INTERNAL ZONE

Secondary Firewall
  • DB Server
  • WAS
  • AD / DC
  • OSINT Gathering

Security consulting proven
across national strategic infrastructure and core industries

  • 200+

    Across the Financial Sector

  • 100+

    Government & Public Institutions

  • 300+

    Enterprises & Private Sector

  • Delivered projects for major enterprises including Samsung, LG, Kakao, and Naver
  • Long-term security consulting experience with Korea's three major telecom carriers (SKT · KT · LG U+)
  • Numerous high-difficulty security projects centered on tier-1 banks
  • Secured national critical infrastructure including Korea's Ministry of Foreign Affairs, National Police Agency, and KEPCO

Frequently Asked Questions

World-class ethical hackers test it themselves

Build security measures tailored to your company, grounded in real-world test results. We welcome both inquiries about adopting our penetration testing and red team services and requests for materials.