Adaptive Security
Adaptive Security sells cybersecurity software that protects companies from AI-driven threats like deepfakes and phishing. The New York-based company raised $136M in a Series B round in December 2025 and employs 284 people.
The growth story
Adaptive Security grew from 1 to 284 employees between 2023 and 2026, raising $136M along the way, most recently a Series B in December 2025.
About
Adaptive Security provides a platform that helps companies manage employee use of AI tools, train staff on emerging threats, simulate AI-powered attacks, and block malicious emails and web activity. Its unified approach aims to address the risks introduced by AI adoption across organizations.
The company has scaled rapidly since its 2024 founding, reaching 284 employees. Its $136M Series B in late 2025 suggests strong investor confidence in its approach to AI-driven cybersecurity challenges.
Founders and leadership
Sales is Adaptive Security's largest function, with 66 employees. The company has a relatively young workforce, with a median tenure of just one year.
The Adaptive Security org chart
Brian Long (CEO & Co-Founder) leads 60 mapped leaders with 4 direct reports. Click +N to expand a team; names link to the person’s public profile.
Departments, and which ones grew
Headcount by function: Sales 81 (+200% YoY), Engineering 51 (+65% YoY), Customer Success and Support 15 (+150% YoY), Information Technology 14 (+250% YoY), Operations 13 (+550% YoY), Marketing 12 (+100% YoY).
Talent flow
Adaptive Security draws heavily from Attentive, with 27 hires from the marketing platform. Other notable sources include Twitter, TapCommerce, and Placer.ai. Alumni have gone on to roles at KnowBe4, PwC, and Huntress.
Most common previous employers of Adaptive Security staff: Attentive (27), Twitter (6), TapCommerce (6), Placer.ai (5), Insight Global (5), Goldman Sachs (5). Former Adaptive Security employees most often moved to KnowBe4 (2), PwC (2), Huntress (1), TalkFreely.app (1), Alcoholics Anonymous World Services (1), People In AI (1).
Alumni worth knowing
Hiring now
Web traffic
Traffic mix: 50% direct, 20% search, 5% social, 3% paid.
What this company is made of
Most common skills at Adaptive Security: Leadership (123), Microsoft Office (91), Microsoft Excel (91), Communication (86), Sales (72), Teamwork (72), Customer Service (70), Public Speaking (64).
Where the team actually sits
Adaptive Security people are concentrated in New York, United States (94), California, United States (39), New York City Metropolitan Area (21), Los Angeles Metropolitan Area (18).
Search footprint
Adaptive Security attracts about 3,175 organic search visits a month, traffic worth roughly $72K a month if bought through ads. It gained 1,393 ranking keywords and lost 755 in the last period.
Frequently asked
Adaptive Security has 284 employees as of September 2026.
Adaptive Security has raised $136M in total, most recently a Series B round in December 2025.
Adaptive Security was founded in 2024 by Brian Long, Andrew Jones.
Brian Long (CEO & Co-Founder) sits at the top of Adaptive Security's reporting structure, with 4 direct reports.
The most common previous employers of current Adaptive Security staff are Attentive (27 people), Twitter (6 people), TapCommerce (6 people).
Former Adaptive Security employees most often move to KnowBe4 (2), PwC (2), Huntress (1).
Adaptive Security attracts about 3,175 organic search visits a month, worth roughly $72K a month in equivalent ad spend.
The most common skills among Adaptive Security staff are Leadership, Microsoft Office, Microsoft Excel, Communication, Sales.
Adaptive Security staff are concentrated in New York, United States (94), California, United States (39), New York City Metropolitan Area (21).
Adaptive Security has about 81 people in Sales, up 200% over the past year, as of September 2026.
Adaptive Security has about 51 people in Engineering, up 65% over the past year, as of September 2026.
Computed from 246 current and 57 former Adaptive Security profiles, as of September 2026. Source: Crustdata.
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