STEALIEN
Seoul, South Korea
Seoul offensive security firm staffed by competitive hackers
Penetration test…Red teamingApplication secu…
- records
- 1
- team
- 50-200
- founded
- n/a
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9 providers
Verified providers
S2W
Seongnam, South Korea
Korean cyber threat intelligence and offensive research company
Threat huntingPenetration test…Vulnerability ma…
- records
- 1
- team
- 50-200
- founded
- 2018
SANDS Lab
Gwacheon, South Korea
Malware-profiling and NDR house that built KISA's cyber-security AI dataset for tracking APT groups.
Blue team & dete…Threat hunting
- records
- 1
- team
- 50-200
- founded
- 2004
PLAINBIT
Seongnam, South Korea
DFIR-first boutique, structured around retainers, compromise assessments and Active Directory security work.
Blue team & dete…Incident responseThreat hunting
- records
- 1
- team
- 10-50
- founded
- 2013
NAONWORKS
Seoul, South Korea
OT/ICS-focused blue team; runs the CEREBRO NDR line for industrial networks inside the AhnLab group.
Blue team & dete…Threat huntingSOC & MDR monito…
- records
- 1
- team
- 50-200
- founded
- 2007
NSHC
Seoul, South Korea
Korean-origin offensive security firm with regional offices
Penetration test…Red teamingThreat hunting
- records
- 1
- team
- 50-200
- founded
- 1999
AhnLab
Seongnam, South Korea
Long-running Korean security house with an in-country SOC and consulting arm
SOC & MDR monito…Blue team & dete…Incident response+1 more
- records
- 1
- team
- 200+
- founded
- 1995
Theori
Seoul, South Korea
Offensive security research firm with Seoul HQ and Austin office
Red teamingPenetration test…Application secu…+1 more
- records
- 0
- team
- 50-200
- founded
- 2016
SK Shieldus
Seongnam, South Korea
Korean MSSP and physical security operator (SK Group)
SOC & MDR monito…Blue team & dete…Penetration test…+2 more
- records
- 0
- team
- 200+
- founded
- n/a
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