IOActive, Inc. vs Bishop Fox
IOActive, Inc.
Founded in 1998 by Joshua Pennell and led since 2008 by Jennifer Sunshine Steffens, IOActive is headquartered in Seattle with offices in Atlanta, London, Madrid, and Dubai. The firm is known for full-stack security assessments and deep specialism in hardware, embedded systems, semiconductors, automotive, industrial control, and other safety-critical environments.
Pros
- Recognised research leader in hardware, automotive, and semiconductor security
- Independently owned since 1998 with stable senior consultant tenure
- Strong publication record at Black Hat, DEF CON, and academic venues
- Specialist labs for hardware bring-up, fault injection, and chip-level analysis
Cons
- Boutique scale relative to NCC Group or Mandiant limits concurrent capacity
- Premium engagement pricing with no public rate card
- Hardware specialism means depth often exceeds what general-IT teams need
Pricing: Custom (contact sales)
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.
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
Cons
- 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
Pricing: Custom (contact sales)