Bishop Fox logo

Bishop Fox

Challenger

Bishop Fox is the leading offensive security firm offering pen testing, ASM, and red teaming via its Cosmos platform; raised $75M Series B in Mar 2025, $165M total funding.

Best for: Offensive Security & Attack Surface Management
CybersecurityOffensive Security & Attack Surface ManagementWebsiteUpdated May 2026

Company Overview

About Bishop Fox

Bishop Fox is an offensive security company that helps organizations identify and remediate vulnerabilities before adversaries can exploit them. Founded in 2005 and headquartered in Phoenix, Arizona, the firm offers penetration testing, attack surface management, application security testing, red team operations, and continuous adversary simulation through a combination of expert-led engagements and its proprietary Cosmos platform. Cosmos provides automated, continuous monitoring of a client's external attack surface, delivering real-time visibility into exposed assets, vulnerabilities, and risk posture.

Business Model & Competitive Advantage

The company raised $75M in a Series B round led by Carrick Capital Partners in March 2025, bringing total funding to $165M. The round funds expansion of the Cosmos platform to incorporate all service lines — including application penetration testing, external network penetration testing, and red teaming — into a unified continuous offensive security offering. Bishop Fox's client roster spans Fortune 500 enterprises across financial services, healthcare, technology, and government contracting sectors that require rigorous, real-world attack simulation rather than compliance-checkbox security assessments.

Competitive Landscape 2025–2026

Bishop Fox differentiates by pairing world-class human offensive security expertise with automated attack surface management technology, enabling organizations to move from point-in-time pen tests to continuous exposure validation. The firm has built a recognized research team that regularly discovers and discloses critical vulnerabilities in enterprise software, contributing to its brand reputation in the offensive security community. As attack surfaces expand with cloud adoption and SaaS proliferation, Bishop Fox's model of continuous testing plus expert remediation guidance is increasingly aligned with enterprise security buyer demand.

Founded
2005
Headquarters
Phoenix, Arizona
Curated content • Fact-checked and verified

Key Differentiators

Strong Challenger

Bishop Fox is an established challenger with significant market presence and competitive offerings in Cybersecurity.

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