CISO Tribune

Vendor comparison · 2 companies

Mate Security vs Stellar Cyber

Mate Security is a cybersecurity company that provides an AI-powered Security Operations Center (SOC) platform to help security teams investigate, manage and respond to cyber threats. Stellar Cyber sells a SecOps platform that uses AI for threat detection and response through unified NG-SIEM, NDR, and Open XDR capabilities. CISO Tribune files both under AI SOC analysts. 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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  • Mate Security
  • Stellar Cyber
Mate Security vs Stellar Cyber: Products, Customers and Funding Compared
Mate SecurityMate Security is a cybersecurity company that provides an AI-powered Security Operations Center (SOC) platform to help security teams investigate, manage and respond to cyber threats.mate.securityStellar CyberStellar Cyber sells a SecOps platform that uses AI for threat detection and response through unified NG-SIEM, NDR, and Open XDR capabilities.stellarcyber.ai
What it sells
  • Gamebooks[4][14]A structured investigation process where AI agents reason and pivot dynamically within every step.
  • Security Context Graph[13]Maps an organization's architecture, crown jewels, exposures, activity and relationships.
  • Agentic Threat Hunting[13]Agents initiate hunts across the environment and write detections to close coverage gaps.
  • Stellar Cyber Open XDR PlatformA SecOps platform that unifies SIEM, network detection and response, identity threat detection and response, and behavior analytics with AI-driven detection, investigation and response.
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 pagesPrivately held[3][4]
Named customers
  • Bridgewater Associates[2]
  • Lead Bank[2]
  • Merlin Entertainments[2]
  • OCBC[2]
  • AlphaSense[2]
  • Applied Systems[2]
  • Demandbase[2]
  • Water-IT[2]
Not stated on its pages
Recent news
Not stated on its pages
  • October 5, 2026Stellar Cyber announced version 7.0 of its security operations platform, adding AI case triage, case metrics and expanded automated response.[16]
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
Not written yetStellar Cyber describes its open SecOps platform as built for lean security teams and MSSPs. Stellar Cyber designs its enterprise platform for security teams of any size or skill level. Stellar Cyber Open XDR can be deployed on-premises, from the cloud, or co-managed by an MSSP.
Last verified
October 29, 2026November 9, 2026

Where they overlap

  • Mate Security and Stellar Cyber are both filed under AI SOC analysts.

Where they differ, field by field

  • Mate Security's primary category is AI SOC analysts; Stellar Cyber's is SIEM.
  • Mate Security is also filed under SOAR and security automation and Threat intelligence. Stellar Cyber is also filed under MDR and managed SOC.
  • Mate Security lists Gamebooks, Security Context Graph and Agentic Threat Hunting. Stellar Cyber lists Stellar Cyber Open XDR Platform.
  • Stellar Cyber is privately held.
  • Mate Security publicly names Bridgewater Associates, Lead Bank, Merlin Entertainments, OCBC, AlphaSense and 3 more.

What it sells: Mate Security

What Gamebooks does[4][14]
A Gamebook is Mate's investigation process, built for AI agents. Mate migrates existing SOAR playbooks into agentic procedures designed for AI-scale attacks. Mate ships Gamebooks for core investigation domains. A customized Gamebook runs through Mate's evals and tests before it goes live.
What Security Context Graph does[13]
Mate's Security Context Graph continuously maps an organization's architecture, crown jewels, exposures, activity and relationships, giving Hunt Agents the context to understand where risk is highest. Mate captures why an analyst made a call, not just the final verdict.
What Agentic Threat Hunting does[13]
Mate extracts IOCs and TTPs, then hunts across every connected tool. Agentic threat hunting prioritizes where to hunt and follows evidence across connected tools as the investigation develops.

Questions about Mate Security and Stellar Cyber

What do Mate Security and Stellar Cyber sell?
Mate Security sells Gamebooks, Security Context Graph and Agentic Threat Hunting. Stellar Cyber sells Stellar Cyber Open XDR Platform.
Are Mate Security and Stellar Cyber in the same category?
They share AI SOC analysts. Mate Security's primary category is AI SOC analysts and Stellar Cyber's is SIEM.
Who owns Mate Security and Stellar Cyber?
Stellar Cyber is privately held.
Which customers do Mate Security and Stellar Cyber name?
Mate Security publicly names Bridgewater Associates, Lead Bank, Merlin Entertainments, OCBC, AlphaSense and 3 more.
Who are Mate Security and Stellar Cyber sold to?
Stellar Cyber describes its open SecOps platform as built for lean security teams and MSSPs.
What have Mate Security and Stellar Cyber announced recently?
October 5, 2026: Stellar Cyber announced version 7.0 of its security operations platform, adding AI case triage, case metrics and expanded automated response.

About Mate Security

Mate Security is a cybersecurity company that provides an AI-powered Security Operations Center (SOC) platform to help security teams investigate, manage and respond to cyber threats. Mate is an agentic cyber defense system that acts across every security use case. Mate grounds AI agents in organization-specific knowledge and validates every decision the agents make. Mate turns an understanding of a customer's organization into what it calls purified knowledge so that AI agents take action across every security use case.[1][10][11][12]

Mate's Security Context Graph continuously maps an organization's architecture, crown jewels, exposures, activity and relationships. Mate captures the context that a customer's tools never recorded, then keeps it sourced, scored and current. Mate captures why an analyst made a call, not just the final verdict. Mate stores data as entities and relationships, and its reason mining engine keeps the underlying reason behind each conclusion.[3][12][13]

Mate collects the artifacts, history, identities and tool outputs that an expert would check. Mate returns a conclusion with an evidence trail that a team can audit and tune. Mate runs data through cleanup, normalization and correlation.[3][12]

Mate checks every action against the customer's environment before it runs. Mate scores every action on Confidence, Precision and Reversibility, and the platform enforces this outside the agent's reasoning loop so that Mate cannot widen its own permissions, hide its actions or grade its own accuracy. Mate describes precision as the smallest action that stops the threat, for example revoking the session while keeping the account. Mate acts on its own only where it has earned the right, measured by proven performance against known-answer cases, and escalates the rest.[3][14]

A Gamebook is Mate's investigation process, built for AI agents. Gamebooks are a structured investigation process where AI agents reason and pivot dynamically within every step, and are customizable to align with a customer's processes. Mate queries tools as a separate flow, with access restrictions for their current task. Mate ships Gamebooks for core investigation domains. A customized Gamebook runs through Mate's evals and tests before it goes live. Customers can write an investigation in plain language, and Mate tests it against past cases, runs it in shadow mode, then waits for sign-off.[3][4]

Mate migrates existing SOAR playbooks into agentic procedures designed for AI-scale attacks. Mate analyzes and migrates playbooks to Mate Gamebooks, and the Gamebooks are validated before activating. A Fortune 500 enterprise SOC migrated 711 SOAR playbooks into 10 Mate Gamebooks.[4][14]

Mate extracts IOCs and TTPs, then hunts across every connected tool. Mate's Hunt Agents receive context from the Security Context Graph to understand where risk is highest. Mate moves through the environment, tunes detections as it goes, and pulls additional logs and context when something looks wrong. Mate correlates every match across tools into one picture, maps it to MITRE and provides a detection ready to deploy. Mate creates, tunes or deprecates detections based on investigation outcomes and contextual changes. Mate uses hunts and investigations to create and tune detections and to update the Context Graph.[3][13]

Blue City is Mate Security's simulated enterprise for testing AI security agents, where business keeps running during an attack and every defensive action has real consequences. Mate's benchmark scenarios build on situations the Mate system resolves in production, rebuilt with synthetic data. Security tools in the benchmark are accessible through the Model Context Protocol (MCP).[3][6][7][9][13][15]

Mate Security on the record

Sources

Mate Security full record

  1. [1]ControlsMate Security · trust.mate.security · undated page, accessed October 29, 2026 · Tier A
  2. [2]mate.securityMate Security · mate.security · undated page, accessed November 3, 2026 · Tier A
  3. [3]AI SOC Platform | Mate SecurityMate Security · undated page, accessed November 3, 2026 · Tier A
  4. [4]Gamebooks | Mate Security PlatformMate Security · undated page, accessed November 3, 2026 · Tier A
  5. [5]Mate emerges from stealth mode with 15 5 million in seed fundingSecurityWeek · securityweek.com · undated page, accessed November 3, 2026 · Tier B
  6. [6]Ryb30q8bgeCTech · calcalistech.com · undated page, accessed November 3, 2026 · Tier B
  7. [7]Mate launches with 15 5m seed to transform security operationsInsight Partners · insightpartners.com · undated page, accessed November 3, 2026 · Tier A
  8. [8]Mate security now available on aws marketplaceMate Security · mate.security · undated page, accessed November 3, 2026 · Tier A
  9. [9]Mate security selected for the 2026 crowdstrike aws nvidia cybersecurity startup acceleratorMate Security · mate.security · undated page, accessed November 3, 2026 · Tier A
  10. [10]Trust Center - matesecurity.ioMate Security · undated page, accessed November 10, 2026 · Tier A
  11. [11]About Mate Security | AI SOC Platform Built on WisdomMate Security · undated page, accessed November 10, 2026 · Tier A
  12. [12]Mate Security | Defend With One Accurate Agentic System DescriptionMate Security · undated page, accessed November 10, 2026 · Tier A
  13. [13]Agentic Threat Hunting for the AI Era: Close the GapsMate Security · undated page, accessed November 10, 2026 · Tier A
  14. [14]Replace SOAR With AI | Mate SecurityMate Security · undated page, accessed November 10, 2026 · Tier A
  15. [15]Blue City: AI Security Agent Benchmark | Mate SecurityMate Security · undated page, accessed November 10, 2026 · Tier A

Stellar Cyber full record

  1. [1]ProductStellar Cyber · stellarcyber.ai · published February 25, 2026 · Tier A
  2. [2]Stellar cyber announces agentic ai autonomous soc in 6 4 0 releaseStellar Cyber · stellarcyber.ai · published March 16, 2026 · Tier A
  3. [3]Stellar cyber named one of americas best startup employersStellar Cyber · stellarcyber.ai · published November 21, 2024 · Tier A
  4. [4]ISOC Platform with AI SIEM, NDR, Open XDR & Multi-Layer AIStellar Cyber · undated page, accessed October 29, 2026 · Tier A
  5. [5]Stellar Cyber Automation-driven SecOps PlatformStellar Cyber · undated page, accessed November 10, 2026 · Tier A
  6. [6]Stellar Cyber vs Sumo Logic: Expert SIEM Solution ComparisonStellar Cyber · undated page, accessed November 10, 2026 · Tier A
  7. [7]Stellar Cyber vs Splunk: In-Depth SIEM Solution ComparisonStellar Cyber · undated page, accessed November 10, 2026 · Tier A
  8. [8]Integrated Security Operations Center (ISOC) PlatformStellar Cyber · undated page, accessed November 10, 2026 · Tier A
  9. [9]SC vs Microsoft Sentinel: Comprehensive SIEM SolutionStellar Cyber · undated page, accessed November 10, 2026 · Tier A
  10. [10]SC vs. CrowdStrike | Compare Leading Cybersecurity PlatformsStellar Cyber · undated page, accessed November 10, 2026 · Tier A
  11. [11]EDR Software, Endpoint Detection & ResponseStellar Cyber · undated page, accessed November 10, 2026 · Tier A
  12. [12]Stellar Cyber Autonomous SOC PlatformStellar Cyber · undated page, accessed November 10, 2026 · Tier A
  13. [13]Stellar Cyber Multi-Layer AI™ | Advanced AI Platform for SecOpsStellar Cyber · undated page, accessed November 10, 2026 · Tier A
  14. [14]Stellar Cyber AI SIEM | AI-Driven SIEM PlatformStellar Cyber · undated page, accessed November 10, 2026 · Tier A
  15. [15]Stellar Cyber vs AlienVault: In-Depth SIEM Solution ComparisonStellar Cyber · undated page, accessed November 10, 2026 · Tier A
  16. [16]Stellar Cyber 7.0 Makes the Agentic SOC Measurable, Actionable and Operational at ScaleStellar Cyber · published October 5, 2026 · Tier A

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