CISO Tribune

Vendor comparison · 2 companies

Bishop Fox vs Halo Security

Bishop Fox sells offensive security services, including penetration testing and continuous security testing. Halo Security sells penetration testing and continuous visibility across an attack surface, bringing testing, discovery, and scanning together. CISO Tribune files both under Penetration testing and red team services and External attack surface management. This page sets the two records side by side: what each sells, where it is based, who owns and funds it, the customers it names and its recent news, each fact numbered to its source.

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  • Bishop Fox
  • Halo Security
Bishop Fox vs Halo Security: Products, Customers and Funding Compared
Bishop FoxBishop Fox sells offensive security services, including penetration testing and continuous security testing.bishopfox.comHalo SecurityHalo Security sells penetration testing and continuous visibility across an attack surface, bringing testing, discovery, and scanning together.halosecurity.com
What it sells
  • Cosmos[3][7][13][14]Bishop Fox's cloud-native technology platform and the foundation of its offensive security services.
  • Penetration Testing Services[4]Bishop Fox penetration testing across applications, networks, products, cloud, and AI systems.
  • Application Penetration Testing[3][9][14]Testing of web, mobile, and other applications, including an AI-powered portfolio option.
  • External Penetration Testing[10]Perimeter testing that emulates targeted adversaries.
  • Hardware Penetration Testing[4][11]Testing of connected devices and their ecosystems.
  • Continuous Security Testing[5][8]Managed continuous testing that Bishop Fox ties to Continuous Threat Exposure Management programs.
  • AIMap[3]Open-source tool built by Bishop Fox for testing exposed AI endpoints.
  • Penetration Testing[1][2][3][11]Halo Security tests web and mobile applications, APIs, external and internal networks, and wireless environments.
  • Attack Surface Management[1][2]Helps organizations discover and monitor the assets they expose to the internet.
  • Application Scanning[5]Scans web applications for vulnerabilities such as SQL injection and cross-site scripting.
Categories
Headquarters
Tempe, United States[2]Not stated on its pages
Founded
2005[1][4][8]Not stated on its pages
Ownership and funding
Not stated on its pagesNot stated on its pages
Named customers
Not stated on its pagesNot stated on its pages
Recent news
  • February 10, 2026Bishop Fox announced an updated application penetration testing service that combines its expert testing teams with its proprietary AI engine, Cosmos AI.[14]
Not stated on its pages
G2 and Gartner Peer Insights
  • G2: Not stated on its pages
  • Gartner Peer Insights: Not stated on its pages
  • G2: Not stated on its pages
  • Gartner Peer Insights: Not stated on its pages
Who it fits
From its own pages, Bishop Fox sells mainly to organizations that want offensive security testing of their applications, cloud, networks, devices, and AI systems. Bishop Fox says most enterprises manage many applications with constrained budgets and headcount. Customers it describes include a healthcare technology company moving to SaaS, an energy provider facing nation-state threats to critical infrastructure, and a financial services organization. Its hardware testing is aimed at healthcare devices, consumer tech, and industrial systems. Bishop Fox says it works with customers who are looking to safely deploy AI, release a new app or service, or validate corporate governance. Cosmos is delivered as a managed platform, so customers do not deploy or maintain it themselves.Not written yet
Last verified
September 27, 2026November 12, 2026

Where they overlap

  • Penetration testing and red team services is the primary category of both Bishop Fox and Halo Security; both are also filed under External attack surface management.

Where they differ, field by field

  • Halo Security is also filed under Vulnerability management and Digital risk protection.
  • Bishop Fox lists Cosmos, Penetration Testing Services, Application Penetration Testing, External Penetration Testing, Hardware Penetration Testing and 2 more. Halo Security lists Penetration Testing, Attack Surface Management and Application Scanning.
  • Bishop Fox is headquartered in Tempe, United States.
  • Bishop Fox was founded in 2005.

How they differ

CISO Tribune files both Bishop Fox and Halo Security under Penetration testing and red team services as the primary category, and both also appear under External attack surface management. Bishop Fox sells Penetration Testing Services across applications, networks, products, cloud, and AI systems, plus Hardware Penetration Testing and Continuous Security Testing. Halo Security sells Penetration Testing for web and mobile applications, APIs, external and internal networks, and wireless environments, and it offers social engineering and red teaming.

On attack surface work, Bishop Fox builds Cosmos, a platform that verifies an inventory of an organization's external attack surface, and Bishop Fox operates it so customers do not deploy or maintain it. Halo Security sells Attack Surface Management to discover and monitor internet-exposed assets, and it also sells Application Scanning for flaws such as SQL injection and cross-site scripting. CISO Tribune also files Halo Security under Vulnerability management and Digital risk protection. Halo Security is a PCI Security Standards Council Approved Scanning Vendor.

Bishop Fox is headquartered in Tempe, United States, and was founded in 2005. Halo Security was originally based in San Francisco and now offers fully remote working opportunities. Halo Security's services were rebranded from TrustedSite in 2022. On February 10, 2026, Bishop Fox announced an updated application penetration testing service that combines its expert testing teams with its proprietary AI engine, Cosmos AI.

What it sells: Bishop Fox

What Cosmos does[3][7][13][14]
Cosmos builds and verifies a living inventory of an organization's external attack surface. It integrates with customer workflows through Jira and ServiceNow, syncing validated findings into existing ticketing systems. Bishop Fox operates and manages Cosmos as part of its services, and customers do not deploy or maintain it.
What Penetration Testing Services does[4]
Bishop Fox penetration testing spans applications, networks, products, cloud, and AI systems. Engagements cover web and mobile apps, cloud environments in AWS, GCP, Azure, and Kubernetes, and IoT, consumer, commercial, and industrial devices.
What Application Penetration Testing does[3][9][14]
Bishop Fox runs in-depth manual and dynamic analyses of Android and iOS devices and apps, guided by OWASP testing methodologies. Bishop Fox AI-Powered Application Penetration Testing delivers validated, expert-reviewed findings across an entire portfolio.
What External Penetration Testing does[10]
Bishop Fox says its External Penetration Testing emulates targeted adversaries and results in discovery of defensive gaps, including likelihood of exploitation and business impact. Testing extends to public cloud storage services and peripheral web apps.
What Continuous Security Testing does[5][8]
Bishop Fox provides continuous security testing that it describes as integral to a successful Continuous Threat Exposure Management (CTEM) program. Its managed services identify, prioritize, and help remediate business-impacting exposures.
What AIMap does[3]
AIMap is an open-source tool built by Bishop Fox. It discovers, scores, and tests exposed AI endpoints.

What it sells: Halo Security

What Penetration Testing does[1][2][3][11]
Halo Security's penetration testing service combines manual investigation with tools whose results are validated by testers. Halo Security tests web and mobile applications, APIs, external and internal networks, and wireless environments. Halo Security offers social engineering and red teaming. An included round of retesting lets customers verify their remediation work.
What Attack Surface Management does[1][2]
Attack surface management covers internet-exposed assets, including websites, APIs, servers, and cloud services. Halo Security continuously checks those assets for vulnerabilities and changes. Halo Security finds and inventories internet-facing assets, including unknown and forgotten websites, IPs, services, and applications.

Questions about Bishop Fox and Halo Security

What do Bishop Fox and Halo Security sell?
Bishop Fox sells Cosmos, Penetration Testing Services, Application Penetration Testing, External Penetration Testing, Hardware Penetration Testing and 2 more. Halo Security sells Penetration Testing, Attack Surface Management and Application Scanning.
Are Bishop Fox and Halo Security in the same category?
Yes. Penetration testing and red team services is the primary category of both on CISO Tribune.
Where are Bishop Fox and Halo Security headquartered?
Bishop Fox is headquartered in Tempe, United States.
When were Bishop Fox and Halo Security founded?
Bishop Fox was founded in 2005.
Who are Bishop Fox and Halo Security sold to?
From its own pages, Bishop Fox sells mainly to organizations that want offensive security testing of their applications, cloud, networks, devices, and AI systems.
What have Bishop Fox and Halo Security announced recently?
February 10, 2026: Bishop Fox announced an updated application penetration testing service that combines its expert testing teams with its proprietary AI engine, Cosmos AI.

About Bishop Fox

Bishop Fox sells offensive security services, including penetration testing and continuous security testing. Bishop Fox says it has 20 years of offensive security experience and thousands of customer engagements. Bishop Fox was founded by ethical hackers. Bishop Fox says it is behind offensive security tools including Sliver and CloudFox. Bishop Fox applies agentic AI to its offensive testing, and Bishop Fox assesses models and architectures as part of securing AI and LLM initiatives.

Bishop Fox penetration testing spans applications, networks, products, cloud, and AI systems. Bishop Fox offers assessments of AI systems tailored to the customer's use case, priorities, and development lifecycle. Bishop Fox's application offering includes web and mobile app penetration testing, AI-powered portfolio assessments, and secure code review. Application testing covers web, thick-client, e-commerce, single page applications, and APIs. Bishop Fox runs in-depth manual and dynamic analyses of Android and iOS devices and apps, guided by OWASP testing methodologies. Bishop Fox AI-Powered Application Penetration Testing delivers validated, expert-reviewed findings across an entire portfolio. Bishop Fox application testers are fluent in programming languages such as Python, C, C#, C++, Java, JavaScript, GO, Swift, PHP, Rust, and Objective C.[9]

Bishop Fox cloud testing goes beyond configuration reviews to identify critical and exploitable paths in AWS, GCP, Azure, and Kubernetes environments. Bishop Fox network testing simulates real-world attack scenarios to uncover perimeter weaknesses and identify how an attacker could gain access to internal networks. Bishop Fox says its External Penetration Testing emulates targeted adversaries and results in discovery of defensive gaps, including likelihood of exploitation and business impact. Bishop Fox hardware and software testing covers IoT, consumer, commercial, and industrial devices. Hardware testing inspects devices down to electronic components including PCBs, chips, storage, debugging interfaces, and bus protocols. Bishop Fox experts test strategic partners and 3rd party vendors.[11]

Bishop Fox provides continuous security testing that it describes as integral to a successful Continuous Threat Exposure Management (CTEM) program. Bishop Fox managed services identify, prioritize, and help customers remediate business-impacting exposures. Bishop Fox Attack Surface Discovery continuously finds, validates, and attributes perimeter assets. Bishop Fox Emerging Threat Testing delivers a per-environment verdict. Bishop Fox says its red team work lets customers face the tactics real adversaries use and see how their team responds. Bishop Fox customizes its reporting, weekly status reports, and post-engagement reviews to the unique needs of the customer's organization.[12][13]

Cosmos is Bishop Fox's cloud-native technology platform and the foundation of its offensive security services. Cosmos is built on stateless microservices that auto scale to enterprise volumes, continuously discovers external assets, and routes high-confidence findings into an expert human validation pipeline. Cosmos builds and verifies a living inventory of an organization's external attack surface. Cosmos runs daily automations that validate reachability and protocol behavior so customers see only verified, visible assets. Cosmos captures evidence in the form of technology fingerprints, screenshots, and service metadata. Cosmos uses tenant- and organization-level cloud connectors. Cosmos integrates with customer workflows through Jira and ServiceNow, syncing validated findings into existing ticketing systems. Validated outputs are surfaced through the Bishop Fox Portal, which provides an asset inventory, confirmed findings, indicators of exposure, and a triage workflow integrated with customer ticketing and collaboration systems. Bishop Fox operates and manages Cosmos as part of its services, and customers do not deploy or maintain the platform themselves.[7]

Bishop Fox built AIMap, an open-source tool that discovers, scores, and tests exposed AI endpoints. Sliver is a cross-platform general purpose implant framework. Sliver supports asymmetrically encrypted C2 over DNS, HTTP, HTTPS, and Mutual TLS.

Bishop Fox says it helps customers who are looking to safely deploy AI, release a new app or service, or validate corporate governance. A healthcare technology company moving to SaaS needed to validate its multi-tenant cloud platform, secure connected device provisioning, and maintain visibility across a growing attack surface. An energy provider faces constant threats from nation-state actors targeting critical infrastructure. Equifax runs year-round perimeter testing to safeguard high-value data. Zoom used continuous attack surface monitoring to protect its expanding platform. Apollo selected Bishop Fox to perform a Google Security Assessment of its application, external perimeter, and Google Cloud Platform (GCP) environment. John Deere relied on in-depth product security reviews and ongoing protection through a managed offensive security platform. Ventrilo.ai partnered with Bishop Fox for application penetration testing and AI security assessments. A financial services organization tested Bishop Fox's Cosmos AI platform against a realistic application.[7][9][13]

Bishop Fox on the record

Sources

Bishop Fox full record

  1. [1]bishopfox.comBishop Fox · bishopfox.com · undated page, accessed September 27, 2026 · Tier A
  2. [2]ContactBishop Fox · bishopfox.com · undated page, accessed September 27, 2026 · Tier A
  3. [3]Bishop Fox | The leading authority in offensive security… | Bishop FoxBishop Fox · undated page, accessed October 23, 2026 · Tier A
  4. [4]Offensive Security: Penetration Testing Services | Bishop FoxBishop Fox · undated page, accessed October 23, 2026 · Tier A
  5. [5]Continuous Security Testing Services | Bishop FoxBishop Fox · undated page, accessed October 23, 2026 · Tier A
  6. [6]Red Team Services | Bishop FoxBishop Fox · undated page, accessed October 23, 2026 · Tier A
  7. [7]Cosmos Technology Platform | Bishop FoxBishop Fox · undated page, accessed October 23, 2026 · Tier A
  8. [8]Offensive Security Services | Bishop FoxBishop Fox · undated page, accessed November 5, 2026 · Tier A
  9. [9]Application Penetration Testing Services | Bishop FoxBishop Fox · undated page, accessed November 5, 2026 · Tier A
  10. [10]External Penetration Testing for Network Security | Bishop FoxBishop Fox · undated page, accessed November 5, 2026 · Tier A
  11. [11]Hardware Security Assessments and Product Security… | Bishop FoxBishop Fox · undated page, accessed November 5, 2026 · Tier A
  12. [12]Bishop Fox | Tactics of Deception: Protecting Trust and PurposeBishop Fox · undated page, accessed November 5, 2026 · Tier A
  13. [13]Explore Customers of Our Offensive Security Solutions | Bishop FoxBishop Fox · undated page, accessed November 5, 2026 · Tier A
  14. [14]Bishop Fox Redefines Offensive Security at Scale with AI-Augmented Penetration TestingBishop Fox · published February 10, 2026 · Tier A

Halo Security full record

  1. [1]halosecurity.comHalo Security · halosecurity.com · undated page, accessed November 12, 2026 · Tier A
  2. [2]Trusted, US-Based Penetration Testing | Halo SecurityHalo Security · undated page, accessed November 12, 2026 · Tier A
  3. [3]12 Questions to Ask a Pentesting Company | Halo SecurityHalo Security · undated page, accessed November 12, 2026 · Tier A
  4. [4]Attack Surface Management Features | Halo SecurityHalo Security · undated page, accessed November 12, 2026 · Tier A
  5. [5]Assess security program effectiveness | Halo SecurityHalo Security · undated page, accessed November 12, 2026 · Tier A
  6. [6]Achieve PCI Compliance | Halo SecurityHalo Security · undated page, accessed November 12, 2026 · Tier A
  7. [7]PCI Compliance Scanning from an ASV | Halo SecurityHalo Security · undated page, accessed November 12, 2026 · Tier A
  8. [8]Integrations | Halo SecurityHalo Security · undated page, accessed November 12, 2026 · Tier A
  9. [9]Halo Security + Brinqa: EASM Meets CTEMHalo Security · undated page, accessed November 12, 2026 · Tier A
  10. [10]Security Review | Halo SecurityHalo Security · undated page, accessed November 12, 2026 · Tier A
  11. [11]Customers | Halo SecurityHalo Security · undated page, accessed November 12, 2026 · Tier A
  12. [12]About Us | Halo SecurityHalo Security · undated page, accessed November 12, 2026 · Tier A

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