CISO Tribune

Vendor comparison · 2 companies

ReliaQuest vs ZeroFox

ReliaQuest sells GreyMatter, an agentic AI security operations platform that allows security teams to detect, contain, investigate and respond to threats, regardless of the data source. ZeroFox sells a fused cybersecurity platform that brings intelligence, AI, and cybersecurity experts together in one continuous loop of discovery, validation, and disruption. CISO Tribune files both under External attack surface management and Digital risk protection. 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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  • ReliaQuest
  • ZeroFox
ReliaQuest vs ZeroFox: Products, Customers and Funding Compared
ReliaQuestReliaQuest sells GreyMatter, an agentic AI security operations platform that allows security teams to detect, contain, investigate and respond to threats, regardless of the data source.reliaquest.comZeroFoxZeroFox sells a fused cybersecurity platform that brings intelligence, AI, and cybersecurity experts together in one continuous loop of discovery, validation, and disruption.zerofox.com
What it sells
  • GreyMatter[1][2][3][4][6][7][8][9][10][11]An agentic AI security operations platform for security teams to detect, contain, investigate and respond to threats.
  • GreyMatter Detect[6][9]Centralizes all created rule logic in a library from any author.
  • Universal Translator[2][3]A patented way to normalize data collected from any source or technology.
  • Cyber Threat Intelligence[1][3][4]Finished intelligence built from Dark Ops, threat channel infiltration, asset fingerprinting, and analyst expertise.
  • Digital Risk Protection[1][2][4][5]Uses threat intelligence to safeguard brands, domains, and executives from threats outside the firewall.
  • HNTR Executive Protection[10]An executive protection solution aimed at impersonation, doxxing, and escalating physical threats.
  • External Attack Surface Management[2][14]Defines and maps an organization's internet-exposed attack surface, identifying known and unknown assets.
  • Mobile App Protection[14]Discovers fraudulent, rogue, or malicious mobile applications impersonating a brand or organization.
  • Credit Card Protection[14]Discovers leaked or stolen credit card numbers and PINs for a single Bank Identification Number.
Categories
Headquarters
Not stated on its pagesNot stated on its pages
Founded
Not stated on its pagesNot stated on its pages
Ownership and funding
Not stated on its pagesOwned by Haveli Investments since 2024[2][12]
Named customers
Not stated on its pagesNot stated on its pages
Recent news
  • August 14, 2026Florida State Athletics named ReliaQuest its official jersey patch partner for men's basketball starting with the 2026-27 season.[12]
Not stated on its pages
G2 and Gartner Peer Insights
  • G2: listed, seen November 10, 2026[13]
  • Gartner Peer Insights: Not stated on its pages
  • G2: listed, seen November 10, 2026[12]
  • Gartner Peer Insights: Not stated on its pages
Who it fits
ReliaQuest describes enterprises that adopt tools to keep up with evolving demands. ReliaQuest addresses organizations that manage security across multiple business units. ReliaQuest describes multicloud and multi-SIEM environments as ones that GreyMatter covers. ReliaQuest addresses organizations that run both OT and IT environments, including threats targeting critical infrastructure. ReliaQuest sells GreyMatter for environments that connect sources like SIEM, EDR, network security, and cloud tools.From its own pages, the company sells mainly to security teams, and the CTI Search Portal page says it is built for them. Its social media offering is described as defending organizations on social platforms from impersonation, scams, fraud, and reputational attacks. Its executive offering is aimed at protecting executives from impersonation, doxxing, and escalating physical threats.
Last verified
November 6, 2026September 27, 2026

Where they overlap

  • ReliaQuest and ZeroFox are both filed under External attack surface management and Digital risk protection.

Where they differ, field by field

  • ReliaQuest's primary category is AI SOC analysts; ZeroFox's is Digital risk protection.
  • ReliaQuest is also filed under SOAR and security automation. ZeroFox is also filed under Threat intelligence.
  • ReliaQuest lists GreyMatter, GreyMatter Detect and Universal Translator. ZeroFox lists Cyber Threat Intelligence, Digital Risk Protection, HNTR Executive Protection, External Attack Surface Management, Mobile App Protection and 1 more.
  • ZeroFox is owned by Haveli Investments, since 2024.

What it sells: ReliaQuest

What GreyMatter does[1][2][3][4][6][7][8][9][10][11]
GreyMatter includes 6 agentic Teammates that use hundreds of agent skills and AI tools to work toward an objective, not just tasks. GreyMatter detects threats wherever data lives, whether in the cloud, on the endpoint, inside a SIEM, directly at the source, or in transit. GreyMatter unifies detection, response, and visibility across a multicloud and multi-SIEM environment.
What GreyMatter Detect does[6][9]
GreyMatter Detect centralizes all created rule logic in its library from any author. GreyMatter Detect allows customers to test and validate detections before and after deployment and monitors their performance continuously.

What it sells: ZeroFox

What Cyber Threat Intelligence does[1][3][4]
ZeroFox fuses Dark Ops, threat channel infiltration, asset fingerprinting, and analyst expertise to deliver finished intelligence. ZeroFox tracks forums, markets, and chats for chatter, access sales, and stolen data. ZeroFox connects to TIP, SIEM, SOAR, and EDR for automated action.
What Digital Risk Protection does[1][2][4][5]
ZeroFox describes Digital Risk Protection as safeguarding external assets such as brands, domains, and executives across social media, marketplaces, and the surface, deep, and dark web. ZeroFox offers Brand, Domain, Executive, and Social Media Protection.
What HNTR Executive Protection does[10]
ZeroFox detects and removes fake profiles, hijacked accounts, and AI-generated video or audio built to impersonate or discredit executives. ZeroFox tracks dark web forums and marketplaces for exposed home addresses, family details, and leaked executive credentials.

Questions about ReliaQuest and ZeroFox

What do ReliaQuest and ZeroFox sell?
ReliaQuest sells GreyMatter, GreyMatter Detect and Universal Translator. ZeroFox sells Cyber Threat Intelligence, Digital Risk Protection, HNTR Executive Protection, External Attack Surface Management, Mobile App Protection and 1 more.
Are ReliaQuest and ZeroFox in the same category?
They share External attack surface management and Digital risk protection. ReliaQuest's primary category is AI SOC analysts and ZeroFox's is Digital risk protection.
Who owns ReliaQuest and ZeroFox?
ZeroFox is owned by Haveli Investments, since 2024.
Who are ReliaQuest and ZeroFox sold to?
ReliaQuest describes enterprises that adopt tools to keep up with evolving demands. From its own pages, the company sells mainly to security teams, and the CTI Search Portal page says it is built for them.
What have ReliaQuest and ZeroFox announced recently?
August 14, 2026: Florida State Athletics named ReliaQuest its official jersey patch partner for men's basketball starting with the 2026-27 season.

About ReliaQuest

ReliaQuest sells GreyMatter, an agentic AI security operations platform that allows security teams to detect, contain, investigate and respond to threats, regardless of the data source. ReliaQuest states that it exists to Make Security Possible, allowing enterprise security teams to detect, contain and respond to threats using GreyMatter. GreyMatter includes 6 agentic Teammates that use hundreds of agent skills and AI tools to work toward an objective, not just tasks. GreyMatter includes persona-based agentic AI Teammates built on 10+ years of proprietary incident response data. GreyMatter collects data from any source or technology and normalizes it with the patented Universal Translator.[1][2][4]

GreyMatter detects threats wherever customer data lives, whether in the cloud, on the endpoint, inside a SIEM, directly at the source, or in transit. GreyMatter unifies threat detection, investigation, hunting, and containment across a customer's environment without requiring data to be moved. GreyMatter Detect centralizes all created rule logic in its library from any author. GreyMatter Detect allows customers to test and validate detections before and after deployment and monitors their performance continuously. ReliaQuest describes detecting threats at the source or in transit and moving and storing only what matters. ReliaQuest designs GreyMatter to be vendor-neutral. Customers connect GreyMatter with sources like SIEM, EDR, network security, and cloud tools.[6][7]

GreyMatter investigates, documents, and responds to routine alerts autonomously. GreyMatter automates phishing triage and applies shared intel for proactive defense across the ReliaQuest customer base. GreyMatter connects the steps between detection, investigation, and response with workflows tailored to the customer's business. ReliaQuest names Slack and Microsoft Teams as integrated tools for communication between users and business units. GreyMatter translates, normalizes, and correlates data to give a team a unified view. GreyMatter unifies tools such as email, network, and endpoint into one command system. GreyMatter lets teams find and fix vulnerabilities, prioritize what is exploitable, and validate risks.[4][8]

GreyMatter unifies detection, response, and visibility across a multicloud and multi-SIEM environment. GreyMatter correlates events across clouds and SIEMs, triggering automated playbooks. GreyMatter detects threats at the source across IaaS, PaaS, SaaS, and SIEM. GreyMatter integrates OT-specific technologies like Armis, Dragos, and Nozomi to enrich detection rules. GreyMatter correlates data from IT and OT sources, including firewalls, PLC logs, and remote access systems. GreyMatter bridges the gap between OT and IT environments. GreyMatter delivers metrics in a unified agentic AI SecOps platform. GreyMatter lets teams compare detection, investigation, and response performance across all entities to identify trends. GreyMatter lets teams benchmark data source visibility and coverage against peer organizations.[9][10][11]

ReliaQuest is headquartered in Tampa, FL, with operations centers in Tampa, Las Vegas, Salt Lake City, Dublin, London and Pune, India. ReliaQuest states a valuation of over $3.4 billion, over 1,200 team members and over 1,000 customers. ReliaQuest states revenue growth to more than $400M in 2025. Brian Foster is responsible for overseeing all areas of ReliaQuest's product development and technical operations. ReliaQuest states four values: being accountable, helpful, adaptable, and focused.[2][5][9][10][11]

ReliaQuest on the record

Sources

ReliaQuest full record

  1. [1]Reliaquest launches first autonomous self learning ai agent for security operationsReliaQuest · reliaquest.com · published September 26, 2024 · Tier A
  2. [2]reliaquest.comReliaQuest · reliaquest.com · undated page, accessed November 6, 2026 · Tier A
  3. [3]About UsReliaQuest · undated page, accessed November 10, 2026 · Tier A
  4. [4]Eliminate Tier 1 and Tier 2 Alerts with Agentic AI in ReliaQuest GreyMatterReliaQuest · undated page, accessed November 10, 2026 · Tier A
  5. [5]Home | ReliaQuest GreyMatter: The Agentic AI Security Operations Platform for Agentic DefenseReliaQuest · undated page, accessed November 10, 2026 · Tier A
  6. [6]Detect Everything Everywhere with ReliaQuest GreyMatter - Powered by Agentic AIReliaQuest · undated page, accessed November 10, 2026 · Tier A
  7. [7]ReliaQuest GreyMatter Integrations: Your Environment + Agentic AI Powered Security OperationsReliaQuest · undated page, accessed November 10, 2026 · Tier A
  8. [8]Agentic AI Solutions for SecOps - ReliaQuestReliaQuest · undated page, accessed November 10, 2026 · Tier A
  9. [9]Unified Multi-Cloud and Multi-SIEM Management with Agentic AI in ReliaQuest GreyMatterReliaQuest · undated page, accessed November 10, 2026 · Tier A
  10. [10]Securing Operational Technology with ReliaQuest GreyMatter, the Agentic AI PlatformReliaQuest · undated page, accessed November 10, 2026 · Tier A
  11. [11]Measure and Enhance SecOps Metrics with ReliaQuest GreyMatter - Powered by Agentic AIReliaQuest · undated page, accessed November 10, 2026 · Tier A
  12. [12]Florida State Athletics Announces Historic Jersey Patch Partnership with ReliaQuestReliaQuest · published August 14, 2026 · Tier A
  13. [13]ReliaQuest GreyMatter Reviews & Product DetailsG2 · undated page, accessed November 10, 2026 · Tier C

ZeroFox full record

  1. [1]PlatformZeroFox · zerofox.com · undated page, accessed September 27, 2026 · Tier A
  2. [2]Haveli completes acquisition of zerofoxZeroFox · zerofox.com · published May 13, 2024 · Tier A
  3. [3]ZeroFox | External Cybersecurity.ZeroFox · undated page, accessed October 30, 2026 · Tier A
  4. [4]External Cybersecurity Platform | ZeroFoxZeroFox · undated page, accessed October 30, 2026 · Tier A
  5. [5]ZeroFox Digital Risk ProtectionZeroFox · undated page, accessed October 30, 2026 · Tier A
  6. [6]Takedowns | ZeroFoxZeroFox · undated page, accessed October 30, 2026 · Tier A
  7. [7]ZeroFox Intelligence Search | ZeroFoxZeroFox · undated page, accessed October 30, 2026 · Tier A
  8. [8]Compromised Credential Monitoring: Identify credentials leaked onlineZeroFox · undated page, accessed October 30, 2026 · Tier A
  9. [9]Physical Security Intelligence (PSI) Software | ZeroFoxZeroFox · undated page, accessed October 30, 2026 · Tier A
  10. [10]Cybersecurity Solutions for Executive Protection | ZerofoxZeroFox · undated page, accessed October 30, 2026 · Tier A
  11. [11]Social Media Security Protection Software | ZeroFoxZeroFox · undated page, accessed October 30, 2026 · Tier A
  12. [12]ZeroFox Reviews 2026: Details, Pricing, & Features - G2G2 · undated page, accessed October 30, 2026 · Tier C
  13. [13]PII Protect & Removal | ZeroFoxZeroFox · undated page, accessed November 10, 2026 · Tier A
  14. [14]Pricing | ZeroFoxZeroFox · undated page, accessed November 10, 2026 · Tier A
  15. [15]ZeroFox Master Customer Agreement | ZeroFoxZeroFox · published December 16, 2025 · Tier A

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