Offensive Security (OffSec) is a leading provider of continuous professional development, training, and education for cybersecurity practitioners. The company offers practical, hands-on cybersecurity training through its proprietary learning platform featuring thousands of hours of content, 4,000+ labs, and 12 industry-standard certifications including the globally recognized Offensive Security Certified Professional (OSCP). OffSec also funds and maintains Kali Linux, the leading open-source operating system for penetration testing and ethical hacking.
Offensive Security has been acquired
This company is no longer available on our private secondary market.
Company data and valuation marks are estimates and may be incomplete, stale, erroneous, or revised.
Founded
2006
Employees
500–580
Funding data and valuation marks are estimates and may be incomplete, stale, erroneous, or revised.
Last updated 06-25-2026
Latest Round
Type
Private Equity / Growth
Date
September 4, 2018
Amount
Not disclosed
Valuation
—
Lead Investors
Mati Aharoni
Co-Founder
Ning Wang
Chief Executive Officer
Competitor list is illustrative and may be incomplete, stale, or erroneous.
Infosec Skills
Cybersecurity training and skills development platform; top OffSec alternative per G2.
INE
IT and cybersecurity training and education provider.
ACI Learning (ITPro)
Hands-on IT and cybersecurity training with outcome-based certification programs.
Cybrary
Cybersecurity and IT training platform providing certifications and skill development.
CyberDefenders
Blue team cybersecurity training focused on defensive security, SOC analysts, and incident response.
HackTheBox (HTB Enterprise)
Cybersecurity training and practice platform with enterprise solutions.
Access live market data
Sign UpData collected with AI, which can make mistakes. Please double-check this information.