Joshua Foster in

Joshua Foster

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Senior Manager, Attack Engineering at Horizon3.ai
📍 Ellicott City, Maryland, United States

Joshua leads the offensive-security engineering team for Horizon3.ais NodeZero platform. His expertise is in building production-grade implementations of attacker tradecraft for Active Directory, Azure, and cloud platforms. He holds an OSCP+ certification and a Bachelor of Science from American University.

Outside of his direct role, Joshua is focused on community building within the DC-area tech scene. He actively organizes and hosts recurring happy hour events at local venues, bringing people together to discuss AI-driven cybersecurity and the future of autonomous testing in a relaxed setting.

A significant share of the attack techniques running in customer pentests on the NodeZero platform today was personally shipped or led by him.

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Experience
15 Years
Current Role
Senior Manager, Attack Engineering
Job Level
Middle
Location
Ellicott City, Maryland, United States
Personality Overview

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Priorities

Topics Joshua cares about

Offensive Security
Leads the team building offensive security content for NodeZero, with personal experience shipping implementations for Active Directory, Azure, and NTLM coercion.
AI in Cybersecurity
His work involves building LLM-driven targeting and data-discovery capabilities, indicating a focus on applying AI to automate and enhance penetration testing.
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Career

Work history

10-2026
Senior Manager, Attack Engineering
Horizon3.ai
8-2025
Manager, Attack Engineering
Horizon3.ai
3-2025 - 8-2025
NodeZero Team Technical Manager
Horizon3.ai
8-2022 - 3-2025
Attack Team Technical Manager
Horizon3.ai
3-2022 - 8-2022
Senior Engineer
Horizon3.ai
In the press

Media appearances

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Education
2010 - 2013
Bachelor of Science - BS
American University
Social presence
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Behavioral profile

DISC profile (public)

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