What Ksign does

KSign Co., Ltd. (케이사인) is a South Korean private security software company founded in 1999 and headquartered in Gwacheon-si, Gyeonggi-do. The company develops and sells a unified security platform spanning database encryption and key management (SecureDB, KMS), PKI-based public key certificate authentication (including a KSignCASE toolkit), unified identity and access management (SSO, EAM, IAM, WizID decentralized identity), mobile authentication (FIDO biometric, m-OTP), and specialized IoT and EV charging security (TrustThing, KEPCO). An AI Security Services module layers AI-driven threat detection and zero trust onto the authentication stack. KSign reports #1 market share in South Korea for PKI authentication systems and database security, with a stated 1,000+ customers across government, financial services, and enterprise verticals and approximately 30 billion KRW in stable annual revenue.

KSign sells primarily through direct enterprise field sales, with dedicated account executives for the financial/enterprise segment (황성택 상무) and the public sector (김정후 상무), supplemented by a nationwide technical and sales partner recruitment program. Pricing is quote-based enterprise contract sales with no publicly disclosed tiers. The revenue model is subscription/recurring across software licenses, maintenance, and support. Customers are concentrated in Korean government agencies, banks and financial institutions, and critical infrastructure operators. In May 2026, KSign was selected as a consortium leader by South Korea's Ministry of Science and ICT for the national Post-Quantum Cryptography pilot conversion program covering telecommunications, finance, transportation, defense, and space — a strategic positioning event with material implications for both revenue trajectory and regulatory moat. The company is co-led by CEOs 구자동 and 최현철, has approximately 100 security professionals, and operates affiliated entities SANDSLab (security research) and AIDeep (AI).

Name

Ksign

Legal name

KSIGN Co.,Ltd.

Website

https://ksign.com

Company type

Private

Founded year

1999

Operating status

Operating

Headcount range

51–100 employees

Short description

KSign is a South Korean private security software company founded in 1999, providing PKI authentication, database encryption, identity and access management, mobile/FIDO authentication, and IoT security to government, financial, and enterprise customers. It claims #1 domestic market share in PKI-based authentication and database security.

Ownership category

akta.pro rank

Product category

Cybersecurity Software

NAICS

Software Publishers (5132), Computer Systems Design and Related Services (5415), Custom Computer Programming Services (541511), Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (5182)

SIC

Services-Computer Programming Services (7371), Services-Computer Programming, Data Processing, Etc. (7370), Services-Computer Integrated Systems Design (7373)

akta.pro primary industry

Single Sign-On (SSO) & Federation (SAML/OIDC, Identity Providers) (HDAEAJAB)

akta.pro secondary industries

Key Management, Encryption & Secrets Management (KMS/HSM/Vault) (HDABAHAG), Secure Communications & Encryption for Utility Networks (VPN, PKI, Key Management) (EUADANAG)

Keywords

• Public key infrastructure
• Database encryption software
• Identity access management
• Biometric authentication
• Post-quantum cryptography

Headquarters

HQ city

Yeoksamdong

HQ country

South Korea

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

Personnel, Technology or R&D, Marketing or Sales, Operations, Infrastructure

Revenue model

1. Security Software Solutions: KSign generates revenue through the sale of security software solutions including database encryption, PKI authentication, SSO/EAM identity management, and mobile authentication products. Revenue is driven by software licenses, subscriptions, and associated maintenance/support contracts.

Go-to-market motion2 records

Distribution channels1 record

Marketing channels4 records

Core offering

Ksign develops and sells enterprise security software spanning four product pillars: database encryption and key management (SecureDB, KMS), PKI-based authentication (PKI Authentication, KSignCASE toolkit), unified identity and access management (SSO, EAM, IAM, WizID), and mobile biometric/OTP authentication (FIDO, m-OTP), complemented by IoT and EV charging security and AI-based security services. The platform is sold to Korean government agencies, financial institutions, and enterprises to secure authentication, protect stored and transmitted data, and meet regulatory compliance requirements.

Product overview

KSign (케이사인) is a unified security platform combining data security, PKI authentication, integrated authentication, and mobile authentication solutions. The platform consists of SecureDB for data encryption and key management, PKI authentication infrastructure with the KSIGN CASE toolkit, SSO/EAM/IAM for unified access management with AI-based zero trust support, FIDO and m-OTP for mobile biometric and OTP authentication, and specialized IoT/EV security products. KSign positions itself as Korea's #1 market leader in encryption-based data security and authentication technology.

Differentiator

Problem solved

Functional benefit

Brands

• k-secu: Email contact brand for KSIGN, used for customer support communications ([email protected]).
• SANDSLab
• AIDeep
• 인트소프트

Products and services

• SecureDB Database Encryption Database encryption and key management solution for preventing exposure of personal information through encryption of stored and transmitted data, designed for enterprises and government agencies handling sensitive records.
• KMS Key Management System Key management solution for secure storage and lifecycle management of encryption keys, sold alongside SecureDB to enterprise and government customers needing auditable cryptographic key operations.
• PKI Authentication PKI-based public key certificate authentication system supporting all international standard PKI technologies to establish trust for users, applications, servers, and devices, targeted at government, financial, and enterprise customers.
• KSignCASE PKI Toolkit PKI toolkit product for developers and integrators to embed PKI-based authentication capabilities into customer applications and systems.
• TrustThing IoT Security IoT security solution for establishing trust in Internet of Things device environments, targeted at enterprises and operators deploying connected device fleets.
• KEPCO EV Charging Security Security solution specifically designed for electric vehicle charging infrastructure, addressing authentication and data protection requirements of EV charging operators.
• SSO Single Sign-On Single sign-on solution enabling unified authentication across multiple enterprise applications, built on an AI-based zero-trust model for next-generation access management.
• EAM Entitlement Access Management Entitlement and access management solution for controlling user permissions and access rights within enterprise identity governance frameworks.
• IAM Identity and Access Management Centralized identity and account management solution providing unified control of user identities and access across the enterprise.
• WizID Decentralized Identity Decentralized identity authentication solution for distributed ID verification across systems and organizations.
• FIDO Biometric Authentication FIDO-based biometric authentication for mobile devices providing strong two-factor authentication, targeted at financial and enterprise mobile users.
• m-OTP Mobile One-Time Password Mobile one-time password authentication solution for two-factor verification on smartphones, complementary to FIDO for mobile banking and enterprise login use cases.
• AI Security Services AI-based security services integrated with the KSIGN authentication and security platform for enhanced threat detection and security intelligence.

Quantifiable outcome

• 30 billion KRW stable annual revenue
• +2 more outcomes

Named customers5 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability1 record

Feature7 records

Partnerships

Two partnerships are on record, tiered core.

• South Korea Ministry of Science and ICT (MSIT)coreStrategic or Co-development Partner · 7 May 2026KSign-led consortium selected as one of six industry partners by South Korea's Ministry of Science and ICT to lead Post-Quantum Cryptography pilot conversion across critical infrastructure sectors including telecommunications, finance, transportation, defense, and space. The partnership aims to develop a standardized national transition model for PQC self-reliance by 2030.
• South Korea Ministry of Science and ICT (MSIT)coreStrategic or Co-development Partner · 6 May 2026KSign consortium partnered with government to pilot-convert cryptographic systems across critical infrastructure including payment networks, transportation systems, defense platforms, and satellite communications. Four R&D initiatives targeting PQC conversion, verification, lightweight optimization, and quantum key distribution integration.

Scale indicators6 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Futurex: Provider of enterprise-grade HSM and key management solutions for payment processing, government, and cloud environments. Direct overlap with KSign's KMS and encryption infrastructure offerings for regulated industries.
• DigiCert: Leading global provider of TLS/SSL certificates and PKI solutions for enterprises and IoT device authentication. Direct overlap with KSign's PKI authentication and IoT security (TrustThing) product lines.
• Penta Security Systems: South Korean PKI and web application security vendor offering certificate authentication, database encryption, and IoT security products. Direct competitor to KSign in the Korean market across PKI and data security categories.

Broad incumbents

• AhnLab: Major Korean cybersecurity vendor offering endpoint security, network security, and increasingly cloud and identity solutions. Competes with KSign in the Korean enterprise and government security market as a broader incumbent.
• Thales (formerly Gemalto): Global provider of HSMs, key management, data encryption, and identity & access management solutions. Overlaps with KSign's SecureDB, KMS, and IAM products as a multinational incumbent serving enterprises and governments.
• Microsoft (Entra ID / Azure AD): Cloud identity platform offered as part of Microsoft 365 and Azure ecosystems, providing SSO, MFA, and conditional access for enterprises. Represents the cloud-native alternative to KSign's on-prem PKI/SSO products and a key competitive threat to legacy identity stacks.
• Okta: Global cloud-native identity and access management leader offering SSO, MFA, and zero trust solutions. Competes with KSign's SSO/EAM/IAM product line, especially for multinational enterprises adopting cloud identity.
• Entrust Corporation: Global leader in PKI, digital certificates, identity governance, and encryption/HSM solutions serving financial institutions and governments worldwide. Direct overlap with KSign's PKI authentication and key management offerings, but operating at much larger global scale.

Regional players

• SECUI: Korean network security and firewall vendor serving carriers and enterprises with complementary security offerings. Overlaps with KSign in Korean enterprise/government security sales channels but focuses on different primary product categories.
• S-1 Corporation: Korean security and identity solutions vendor serving financial institutions with biometric authentication, PKI, and access control products. Direct competitor to KSign in Korean financial sector identity and authentication deals.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Funding overview

Funding rounds1 record

Investors1 record

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Ksign