CISO Tribune

Vendor comparison · 2 companies

Assail vs XM Cyber

Assail sells Ares, an autonomous offensive security platform that tests applications, APIs, mobile apps and AI systems and shows what an attacker could actually reach. XM Cyber sells a platform that continuously surfaces every validated exposure that forms real attack paths. CISO Tribune files both under Breach simulation and automated pen-testing. 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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  • Assail
  • XM Cyber
Assail vs XM Cyber: Products, Customers and Funding Compared
AssailAssail sells Ares, an autonomous offensive security platform that tests applications, APIs, mobile apps and AI systems and shows what an attacker could actually reach.assailai.comXM CyberXM Cyber sells a platform that continuously surfaces every validated exposure that forms real attack paths.xmcyber.com
What it sells
  • Ares[1][3][4][5][6][7][9][10][11][12]Continuous autonomous red teaming across web applications, APIs, and mobile apps.
  • Reaper[3]Autonomous offensive cyber operations built for military, federal, and intelligence missions.
  • Assail Anywhere[3]Deployment option for the entire platform, including the AI model.
  • Continuous Exposure Management Platform[4][5]Surfaces validated exposures that form real attack paths.
  • XM Attack Graph Analysis™Maps viable exposures into attack paths that lead to business-critical assets.
Categories
Headquarters
Not stated on its pagesHerzliya, Israel[3]
Founded
Not stated on its pagesNot stated on its pages
Ownership and funding
Privately heldOwned by Schwarz Group since 2021[2][4][15]
Named customers
Not stated on its pagesNot stated on its pages
Recent news
  • November 4, 2026Assail, Inc. announced Cassandra, a proactive AI agent integrated into its Ares platform, along with expanded threat modeling capabilities tied to autonomous security testing.[11]
  • July 7, 2026Assail Inc. launched Sidewinder, a rebuilt second-generation version of its Ares offensive security platform running on a new 31 billion-parameter model.[12]
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: listed, seen November 10, 2026[15]
  • Gartner Peer Insights: Not stated on its pages
Who it fits
From its own pages, Assail sells mainly to security teams in manufacturing, financial services, federal and state government, automotive, retail, and defense. Its industry pages address manufacturers, banks and fintech firms, government agencies, vehicle makers, retailers, and defense programs. Assail also says it supports on-premises, air-gapped, own-cloud, and SaaS deployment for organizations that need to keep data under their control.From its own pages, XM Cyber does not state organisation size, industries or deployment models it targets. Its business initiatives menu names Operational Technology (OT), Mergers and Acquisitions, Ransomware Readiness and Executive Risk Reporting, but the pages do not describe these as customer segments or buyer roles. This is our reading of the pages, not a recommendation.
Last verified
October 21, 2026November 2, 2026

Where they overlap

  • Assail and XM Cyber are both filed under Breach simulation and automated pen-testing.

Where they differ, field by field

  • Assail's primary category is Breach simulation and automated pen-testing; XM Cyber's is Exposure prioritisation and CTEM.
  • Assail is also filed under API security and Mobile security.
  • Assail lists Ares, Reaper and Assail Anywhere. XM Cyber lists Continuous Exposure Management Platform and XM Attack Graph Analysis™.
  • XM Cyber is headquartered in Herzliya, Israel.
  • Assail is privately held. XM Cyber is owned by Schwarz Group, since 2021.

What it sells: Assail

What Ares does[1][3][4][5][6][7][9][10][11][12]
Ares uses coordinated AI agents to discover weaknesses and validate what an attacker could actually reach. It tests authenticated applications through the existing identity provider and tracks changes across known and shadow APIs. Ares delivers the evidence behind each confirmed risk.
What Reaper does[3]
Assail describes Reaper as built for military, federal, and intelligence missions. Assail has expanded Reaper's sovereign deployment architecture to AWS GovCloud and Google Cloud Assured Workloads.

What it sells: XM Cyber

What XM Attack Graph Analysis™ does
XM Attack Graph Analysis™ maps all viable exposures into attack paths from the external attack surface, across on-prem and cloud, to business-critical assets. The platform takes a digital twin approach to prioritize exposures validated against exploitability and reachability conditions, taking into account compensating security controls.

Questions about Assail and XM Cyber

What do Assail and XM Cyber sell?
Assail sells Ares, Reaper and Assail Anywhere. XM Cyber sells Continuous Exposure Management Platform and XM Attack Graph Analysis™.
Are Assail and XM Cyber in the same category?
They share Breach simulation and automated pen-testing. Assail's primary category is Breach simulation and automated pen-testing and XM Cyber's is Exposure prioritisation and CTEM.
Where are Assail and XM Cyber headquartered?
XM Cyber is headquartered in Herzliya, Israel.
Who owns Assail and XM Cyber?
Assail is privately held. XM Cyber is owned by Schwarz Group, since 2021.
Who are Assail and XM Cyber sold to?
From its own pages, Assail sells mainly to security teams in manufacturing, financial services, federal and state government, automotive, retail, and defense. From its own pages, XM Cyber does not state organisation size, industries or deployment models it targets.
What have Assail and XM Cyber announced recently?
November 4, 2026: Assail, Inc. announced Cassandra, a proactive AI agent integrated into its Ares platform, along with expanded threat modeling capabilities tied to autonomous security testing.

About Assail

Assail sells Ares, an autonomous offensive security platform that tests applications, APIs, mobile apps and AI systems and shows what an attacker could actually reach.[1]

Assail says Ares continuously tests applications, APIs, mobile apps, and AI systems as they change. Ares follows attack paths, exploits weaknesses, and proves what an attacker could actually reach. Coordinated AI agents extend testing capacity, and Ares tests authenticated applications through the customer's existing identity provider. Ares also tracks changes across known and shadow APIs and delivers the evidence behind each confirmed risk.[3]

Assail describes Ares as combining autonomous red teaming, attack surface management, and Shadow AI discovery across web, API, mobile, and supported AI environments, with applicable MITRE ATLAS coverage. The Ares platform is powered by Assail's domain-adapted model for security reasoning and tool use.[3][7]

On deployment, Assail says Ares can run within the customer's own infrastructure, even in disconnected environments. With Assail Anywhere, the entire platform, including the AI model, deploys on-premises, inside isolated and air-gapped networks, in the customer's own cloud, or through Assail's SaaS. Assail has also announced that it expanded Reaper's sovereign deployment architecture to AWS GovCloud and Google Cloud Assured Workloads.[3]

Assail names Ares, Reaper, and Scorpion as the products taken to the fight. Reaper is described as autonomous offensive cyber operations built for military, federal, and intelligence missions.[3]

Assail publishes industry pages for manufacturing, financial services, federal and state government, automotive, retail, and defense. In manufacturing, Ares validates systems such as ERP, MES, PLM, supplier portals, industrial APIs, and connected products. In financial services, Ares validates APIs, payment rails, mobile banking apps, and open banking integrations. For retail, Ares validates e-commerce web apps, mobile shopping apps, loyalty APIs, and gift card platforms. In automotive it covers telematics APIs, OTA infrastructure, and mobile companion apps.[4][5][6][9][10]

Assail says its team brings 26 years of offensive security experience. Assail also publishes original research on attack techniques and the exploitation of AI and API surfaces. A customer, Branch, says Ares helps its security team increase penetration testing frequency and validate remediations faster.[1][2][3][4][5][6][8]

Assail on the record

Sources

Assail full record

  1. [1]assailai.comAssail · assailai.com · undated page, accessed October 21, 2026 · Tier A
  2. [2]Press releasesAssail · assailai.com · undated page, accessed October 21, 2026 · Tier A
  3. [3]Assail | Autonomous Offensive AI for the modern application stackAssail · undated page, accessed November 4, 2026 · Tier A
  4. [4]Assail | Autonomous Offensive AI for the modern application stackAssail · undated page, accessed November 4, 2026 · Tier A
  5. [5]Assail | Autonomous Offensive AI for the modern application stackAssail · undated page, accessed November 4, 2026 · Tier A
  6. [6]Assail | Autonomous Offensive AI for the modern application stackAssail · undated page, accessed November 4, 2026 · Tier A
  7. [7]Automotive | AssailAssail · undated page, accessed November 4, 2026 · Tier A
  8. [8]Assail | Autonomous Offensive AI for the modern application stackAssail · undated page, accessed November 4, 2026 · Tier A
  9. [9]Assail | Autonomous Offensive AI for the modern application stackAssail · undated page, accessed November 4, 2026 · Tier A
  10. [10]Assail | Autonomous Offensive AI for the modern application stackAssail · undated page, accessed November 4, 2026 · Tier A
  11. [11]Assail Introduces Cassandra, a Proactive AI Agent Connecting Threat Modeling with Autonomous Security TestingPR Newswire · published November 4, 2026 · Tier A
  12. [12]Assail launches Sidewinder, an offensive security AI that fixes its own mistakesSiliconANGLE · published July 7, 2026 · Tier B

XM Cyber full record

  1. [1]xmcyber.comXM Cyber · xmcyber.com · undated page, accessed September 27, 2026 · Tier A
  2. [2]Schwarz group acquires israeli hybrid cloud cybersecurity innovator xm cyberXM Cyber · xmcyber.com · published November 22, 2021 · Tier A
  3. [3]0,7340,L 3734737,00Calcalist · calcalistech.com · published March 23, 2018 · Tier B
  4. [4]Continuous Exposure Management | XM CyberXM Cyber · undated page, accessed October 30, 2026 · Tier A
  5. [5]Use case- Audit & ComplianceXM Cyber · undated page, accessed November 10, 2026 · Tier A
  6. [6]Platform | XM CyberXM Cyber · undated page, accessed November 10, 2026 · Tier A
  7. [7]Security Controls MonitoringXM Cyber · undated page, accessed November 10, 2026 · Tier A
  8. [8]Vulnerability Risk ManagementXM Cyber · undated page, accessed November 10, 2026 · Tier A
  9. [9]XM Cyber for Continuous Exposure Prioritization | XM CyberXM Cyber · undated page, accessed November 10, 2026 · Tier A
  10. [10]Safely Adopt AI Without Introducing RiskXM Cyber · undated page, accessed November 10, 2026 · Tier A
  11. [11]Case Studies | XM CyberXM Cyber · undated page, accessed November 10, 2026 · Tier A
  12. [12]Security, Compliance and Privacy | XM CyberXM Cyber · undated page, accessed November 10, 2026 · Tier A
  13. [13]Solution Briefs | XM CyberXM Cyber · undated page, accessed November 10, 2026 · Tier A
  14. [14]XM Cyber Named a Challenger in the Gartner® Magic Quadrant™ for Exposure Assessment Platforms | XM CyberXM Cyber · published November 13, 2025 · Tier A
  15. [15]XM Cyber Exposure Management Platform Reviews 2026G2 · undated page, accessed November 10, 2026 · Tier C

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