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Bishop Fox

Offensive security firm pairing high-end penetration testing with Cosmos, a continuous attack-surface management platform.

CompanyPenetration Testing FirmsCloud

Pricing: Custom (contact sales)

Reviewed by the Cyber Vendor Guide editorial team against the public sources cited below · Last reviewed June 2026 · How we review listings

What is Bishop Fox?

Founded in 2005 (originally as Stach & Liu), Bishop Fox positions itself as 'the leading authority in offensive security' and is headquartered in Tempe, Arizona. Beyond traditional consulting it sells Cosmos, a continuous attack-surface management and offensive-testing platform that pairs automated discovery with human operator validation.

Best for: Mid-to-large enterprises wanting continuous offensive testing rather than annual point-in-time pentests

Pros

  • Cosmos delivers continuous human-validated testing, not point-in-time engagements
  • Strong consultant brand and notable open-source releases (Sliver C2 framework)
  • Active Bishop Fox Labs research output and conference presence
  • Highly tenured consultant base focused exclusively on offensive security

Things to check

  • Premium pricing aimed at upper mid-market and enterprise, no public price list
  • Cosmos requires meaningful integration and a minimum spend
  • Largely U.S.-centric delivery footprint compared with global rivals

Reported in public reviews and vendor documentation. See sources below.

Key Features

Application penetration testing (web, mobile, API)
Network and cloud penetration testing (AWS, Azure, GCP)
Red team engagements and adversary emulation
AI/ML and LLM security assessments
Cosmos continuous attack surface management
External attack-surface discovery and exposure monitoring
Source code review and product security reviews
Tabletop exercises and purple team operations

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Sources & references

Where the information on this listing comes from. Always verify pricing and capabilities against the vendor before a purchasing decision.

Spot an error, or do you represent Bishop Fox? Request a correction.

Key facts

Pricing
Custom (contact sales)
Model
Project + Cosmos subscription
Founded
2005
Cloud
Yes
Self-hosted
No
Visit websiteView on GitHub

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Where Bishop Fox appears

Guides

Certifications

PCI DSS, HIPAA, SOC 2, ISO 27001, NIST CSF