STEALIEN
STEALIEN is a South Korean cybersecurity company that builds the proprietary AppSuit mobile app security suite and provides penetration testing and security consulting to 200+ enterprise customers, primarily Korean banks, securities firms, insurers, and government agencies, with expanding AI-based vulnerability and web security products.
- Company typePrivate
- Founded2015
- HeadquartersYongsan, South Korea
- Headcount11–50
- GTM typeB2B
- OfferingSoftware
What STEALIEN does
STEALIEN Co., Ltd. (스틸리언) is a South Korea-based cybersecurity company founded in 2015 that develops mobile application security software and provides offensive security services. Its flagship offering is the AppSuit Series, a 100% self-developed portfolio of 10+ modules — including AppSuit Premium for code obfuscation, plus Keypad, AV, RemoteBlock, VPNBlock, MacroBlock, Anti-Capture, Unit, Hybrid, and Radar — that addresses reverse-engineering, tampering, keylogging, malware, remote-access attacks, VPN bypass, macro automation, screen capture, and ongoing threat monitoring. The AppSuit portfolio holds Korea's GS (Good Software) Certification Grade 1 and aligns with Korean Financial Security Agency mobile evaluation criteria and Ministry of the Interior and Safety public-service standards, making it a default shortlist for regulated mobile services.
The company monetizes through four streams: AppSuit subscription licensing, security consulting and penetration testing, Cyber Drill System (cybersecurity training and competition platform) licensing, and contract R&D services for national institutions. It serves 200+ enterprise customers concentrated in Korean financial services — including KB Kookmin Bank, Shinhan Bank, Kbank, Daegu Bank, KB Securities, Kiwoom Securities, Hanwha Investment & Securities, Samsung Life Insurance, MetLife, and Hyundai Marine & Fire Insurance — alongside large enterprises (LG Electronics, SK Telecom, Korean Air), government bodies (Seoul Metropolitan Government, Ministry of the Interior and Safety), and educational institutions (KERIS). It maintains wholly-owned regional offices in Tokyo, Japan and Jakarta, Indonesia, and runs the SSL (Stealien Security Leader) talent mentoring program.
In 2026, STEALIEN launched two AI products — AlienRay (AI vulnerability analysis) and an AI Web Security Solution targeting bot attacks — and its CEO Chanam Park was appointed to Korea's Financial Services Commission AI Security Committee and the Ministry of Science and ICT Cyber Incident Investigation Committee. The company is privately held, founder-led, and operates with 11–50 employees from its Seoul headquarters.
STEALIEN firmographics
Firmographics- Name
- STEALIEN
- Legal name
- (주)스틸리언
- Website
- https://stealien.com
- Company type
- Private
- Founded year
- 2015
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- STEALIEN is a South Korean cybersecurity company that builds the proprietary AppSuit mobile app security suite and provides penetration testing and security consulting to 200+ enterprise customers, primarily Korean banks, securities firms, insurers, and government agencies, with expanding AI-based vulnerability and web security products.
- Ownership category
- akta.pro rank
STEALIEN industry classification
Industry- Product category
- Mobile Application Security
- NAICS
- Software Publishers (5132), Computer Systems Design and Related Services (54151)
- SIC
- Services-Computer Programming Services (7371)
- akta.pro primary industry
- Mobile Application Security (App Shielding, Anti-Tamper) (HDADACAL)
- akta.pro secondary industries
- Fraud Detection & Prevention (payments fraud, account takeover, scams) (FSAGAFAE), Endpoint Deception & Anti-Ransomware (HDADAEAL), Insider Threat Program Design & Risk Assessments (BPAKADAM), Secure Software & DevOps Awareness (Secure Coding Basics) (EDABAGAN)
Keywords
Where STEALIEN is headquartered
LocationHeadquarters
- HQ city
- Yongsan
- HQ country
- South Korea
- HQ region
- Asia
Offices3 records
Markets served
STEALIEN business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Personnel, Technology or R&D, Marketing or Sales, Operations
Revenue model
- Software Licensing (AppSuit Series): Sale of mobile app security software solutions including AppSuit Premium, Keypad, AV, RemoteBlock, VPNBlock, MacroBlock, Anti-Capture, Unit, Hybrid, and Radar products
- Security Consulting Services: Penetration testing and security consulting services including web, mobile, IoT, cloud security vulnerability analysis
- Cyber Drill System: Cyber hacking training and competition management system sales
- R&D Services: Security technology research and development services with national institutions and research labs
Go-to-market motion1 record
Distribution channels2 records
Marketing channels4 records
STEALIEN product offering
Product offeringCore offering
STEALIEN develops and sells the 100% self-developed AppSuit Series of mobile app security software—including AppSuit Premium and ten specialized modules (Keypad, AV, RemoteBlock, VPNBlock, MacroBlock, Anti-Capture, Unit, Hybrid, Radar)—alongside the Cyber Drill System for cybersecurity training, the AlienRay AI vulnerability analysis product, and professional services such as penetration testing, security consulting, and R&D for financial institutions, government agencies, and large enterprises.
Product overview
STEALIEN offers a comprehensive mobile app security portfolio under the AppSuit Series brand, which includes the core AppSuit Premium integrated solution plus ten specialized add-on modules (Keypad, AV, RemoteBlock, VPNBlock, MacroBlock, Anti-Capture, Unit, Hybrid, and Radar) all 100% self-developed by STEALIEN and certified with GS (Good Software) Grade 1. Additionally, the company provides the Cyber Drill System for cybersecurity training and education, and recently launched AlienRay, an AI-powered vulnerability analysis product. Together, these products form a unified security ecosystem addressing mobile app protection, threat monitoring, and security training needs.
Differentiator
Problem solved
Functional benefit
Brands
- AppSuit Series: Mobile app security solution lineup including AppSuit Premium, Keypad, AV, RemoteBlock, VPNBlock, MacroBlock, Anti-Capture, Unit, Hybrid, and Radar products
- Cyber Drill System
- SSL (Stealien Security Leader)
Products and services
- AppSuit Premium
Quantifiable outcome
- GS (Good Software) Certification Grade 1 achieved
- +1 more outcomes
Companies that use STEALIEN
Customer profileNamed customers17 records
Segments4 records
Ideal customer profiles4 records
STEALIEN technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
AI capability1 record
Feature11 records
STEALIEN partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- the spotminorSSL 6기 (Security Leader Program 6th cohort) - the spot partners with STEALIEN to jointly mentor cybersecurity research participants. Mobile system hacking topic is supervised by the spot as the mentoring partner.
Scale indicators1 record
Recent moves6 records
Expansion highlights5 records
STEALIEN competitors and assessment
Company assessmentDirect peers
- Promon: Norwegian mobile app shielding vendor whose SHIELD product is the most direct global analogue to STEALIEN's AppSuit Premium, offering code obfuscation, anti-tamper, and runtime protection for Android and iOS apps in financial services and other regulated verticals.
- Guardsquare: Belgian vendor behind DexGuard and iXGuard, a widely adopted Android/iOS app-shielding and code-protection platform directly comparable to STEALIEN's AppSuit Premium and Hybrid modules.
- Verimatrix: Formerly Inside Secure, Verimatrix provides app shielding, code protection, and runtime threat defense for mobile and IoT apps, overlapping with multiple AppSuit modules including obfuscation, anti-tamper, and threat monitoring.
- Appdome: Mobile app security automation platform providing no-code mobile RASP, anti-fraud, anti-malware, and code obfuscation — directly comparable to STEALIEN's AppSuit suite, particularly AppSuit Premium, AV, Anti-Capture, and MacroBlock.
- Digital.ai (formerly Arxan): Arxan, now part of Digital.ai, has historically been the benchmark for in-app protection and code obfuscation in regulated industries, offering a direct competitive analogue to STEALIEN's app-shielding offerings.
Broad incumbents
- OneSpan: Established mobile and transaction security vendor for financial institutions with mobile app shielding, transaction signing, and fraud prevention — comparable to STEALIEN as a broader incumbent serving the same Korean/global bank buyer personas.
- Trustwave: Global cybersecurity services and product vendor owned by Singtel, with mobile application security testing, penetration testing, and managed security — overlapping with STEALIEN's professional services arm (penetration testing and security consulting).
- Zimperium: Mobile threat defense (MTD) and mobile app security vendor whose zKeyBox and zShield products overlap with STEALIEN's anti-tamper and runtime protection modules, while addressing a broader mobile security buyer.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
STEALIEN social profiles
Digital presenceSTEALIEN compliance and trust
Trust signalCompliance6 records
STEALIEN financial estimates
Financial estimateRevenue estimate
Valuation estimate
STEALIEN leadership team
Management profileNumber of profiles
Profiles2 records
STEALIEN subsidiaries and ownership
Company hierarchySubsidiaries1 record
STEALIEN funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
STEALIEN M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about STEALIEN
What does STEALIEN do?
STEALIEN develops and sells the 100% self-developed AppSuit Series of mobile app security software—including AppSuit Premium and ten specialized modules (Keypad, AV, RemoteBlock, VPNBlock, MacroBlock, Anti-Capture, Unit, Hybrid, Radar)—alongside the Cyber Drill System for cybersecurity training, the AlienRay AI vulnerability analysis product, and professional services such as penetration testing, security consulting, and R&D for financial institutions, government agencies, and large enterprises.
Is STEALIEN a public or private company?
STEALIEN is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was STEALIEN founded?
STEALIEN was founded in 2015. It employs 11 to 50 people.
Where is STEALIEN based?
STEALIEN is headquartered in Yongsan, South Korea, in the Asia region.
How does STEALIEN make money?
Four revenue lines are on record. Software Licensing (AppSuit Series) is the primary driver. The others are security Consulting Services, cyber Drill System and R&D Services.
Who are STEALIEN's main competitors?
Direct peers on record are Promon, Guardsquare, Verimatrix, Appdome and Digital.ai (formerly Arxan). Broad incumbents are OneSpan, Trustwave and Zimperium.
Does STEALIEN have an API?
No public API is recorded for STEALIEN.
What industry is STEALIEN in?
STEALIEN's product category is Mobile Application Security. Its primary akta.pro industry code is HDADACAL, Mobile Application Security (App Shielding, Anti-Tamper), with a secondary code of FSAGAFAE, Fraud Detection & Prevention (payments fraud, account takeover, scams). Its NAICS code is 5132 and its SIC code is 7371.