SCANNING
Penetration Testing & Security Consulting

We find hidden threats
before anyone else.

EastSun Security is an information security firm specializing in penetration testing and security consulting. We proactively uncover and defend against vulnerabilities through real-world intrusion testing.

9yr
Years in Business
100+
Projects Delivered
13K+
Organizations Protected
24/7
Response Coverage
Core Services

Core Services

We diagnose like an attacker and solve like a defender.

01 / RED TEAM

Red Team Consulting

MITRE ATT&CK-based attack simulation across the full kill chain to test real detection and response capability.

02 / PENTEST

Vulnerability Assessment

Real-world intrusion testing across web, mobile, infrastructure, and SCADA to diagnose vulnerabilities based on actual attack scenarios.

03 / PRIVACY

Privacy & Certification

ISMS-P, GDPR, and privacy compliance consulting across the full personal data lifecycle.

04 / ISMS

Security Management System

ISMS, ISO 27001, and TISAX certification support, from governance design to audit response.

05 / OT SECURITY

Process Security

IEC 62443-based OT security for energy, chemical, and manufacturing control systems, from design to audit.

06 / TRADE SECRETS

Trade Secret Protection

Protecting core technology assets and nationally designated core technologies from leak to incident response.

AI Security Solutions

Security Expertise, Built Into AI Products

ESSCODE reads and understands your source code. ESSRAG turns scattered documents into answers.

ESSCODE

AI Source Code Security Platform

An LLM reads your code to trace data flow and business logic, cutting false positives and suggesting concrete fixes — with on-premise deployment for closed networks.

ESSRAG

AI Enterprise RAG Platform

Hybrid semantic + BM25 search with Korean reranking turns PDF, Word, and Excel documents into a system that understands and answers.

Explore AI Solutions

Ready to find your blind spots?

Talk to our team about a security assessment tailored to your organization.

Get in Touch