CISO Tribune

Vendor comparison · 2 companies

Assail vs Zimperium

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. Zimperium sells Mobile Threat Defense for mobile devices and the Mobile Application Protection Suite for mobile applications. CISO Tribune files both under Mobile security. 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
  • Zimperium
Assail vs Zimperium: 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.comZimperiumZimperium sells Mobile Threat Defense for mobile devices and the Mobile Application Protection Suite for mobile applications.zimperium.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.
  • Mobile Application Protection Suite (MAPS)MAPS covers app scanning, shielding, key protection, and runtime protection.
  • Mobile App Response Agent[3][7]An agentic AI solution within MAPS for SOC and Fraud teams responding to attacks on mobile apps.
Categories
Headquarters
Not stated on its pagesDallas, United States[2][5][8]
Founded
Not stated on its pagesNot stated on its pages
Ownership and funding
Privately heldNot stated on its pages
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]
  • July 7, 2026Zimperium announced new zLabs research describing RedWing, an Android Malware-as-a-Service platform sold through a commercial subscription model.[11]
  • December 3, 2025Zimperium appointed Alistaire Davidson as Chief Financial Officer, reporting to CEO Shridhar Mittal.[10]
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: listed, seen November 3, 2026[4]
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, Zimperium sells mainly to enterprises that need to protect mobile devices, whether company-owned or personal, and the mobile apps that run on them. Zimperium names security, development, and compliance teams as users of its platform. Mobile App Response Agent is meant for SOC and Fraud teams, and Mobile SOC Agent is meant for security analysts. Zimperium says government agencies and technology partners rely on Zimperium to secure mobile environments.
Last verified
October 21, 2026September 27, 2026

Where they overlap

  • Assail and Zimperium are both filed under Mobile security.

Where they differ, field by field

  • Assail's primary category is Breach simulation and automated pen-testing; Zimperium's is Mobile security.
  • Assail is also filed under API security.
  • Assail lists Ares, Reaper and Assail Anywhere. Zimperium lists Mobile Application Protection Suite (MAPS) and Mobile App Response Agent.
  • Zimperium is headquartered in Dallas, United States.
  • Assail is privately held.

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: Zimperium

What Mobile Application Protection Suite (MAPS) does
Zimperium says MAPS integrates in-app protection with centralized threat visibility. MAPS is offered in a PCI MPOC package with zConsole, zDefend, zShield and zKeyBox.
What Mobile App Response Agent does[3][7]
Zimperium says Mobile App Response Agent lets analysts trigger an automated investigation with a single action. It then delivers an attack narrative and recommended response actions. It is available to current and new MAPS customers.

Questions about Assail and Zimperium

What do Assail and Zimperium sell?
Assail sells Ares, Reaper and Assail Anywhere. Zimperium sells Mobile Application Protection Suite (MAPS) and Mobile App Response Agent.
Are Assail and Zimperium in the same category?
They share Mobile security. Assail's primary category is Breach simulation and automated pen-testing and Zimperium's is Mobile security.
Where are Assail and Zimperium headquartered?
Zimperium is headquartered in Dallas, United States.
Who owns Assail and Zimperium?
Assail is privately held.
Who are Assail and Zimperium 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, Zimperium sells mainly to enterprises that need to protect mobile devices, whether company-owned or personal, and the mobile apps that run on them.
What have Assail and Zimperium 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. July 7, 2026: Zimperium announced new zLabs research describing RedWing, an Android Malware-as-a-Service platform sold through a commercial subscription model.

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

Zimperium full record

  1. [1]Mobile threat defenseZimperium · zimperium.com · undated page, accessed September 27, 2026 · Tier A
  2. [2]Zimperium acquires mobile application security pioneer whitecryptionZimperium · zimperium.com · undated page, accessed September 27, 2026 · Tier A
  3. [3]Zimperium Mobile Security Solutions | Mobile Security for Apps & DevicesZimperium · undated page, accessed October 30, 2026 · Tier A
  4. [4]Zimperium Reviews, Ratings & Features 2026 | Gartner Peer InsightsGartner Peer Insights · undated page, accessed October 30, 2026 · Tier C
  5. [5]Zimperium Earns Prestigious Recognition in the 2025 Globee Awards for CybersecurityZimperium · published March 25, 2025 · Tier A
  6. [6]Zimperium Launches New AI-Empowered Mobile SOC Agent to Bolster Security Teams Defending Mobile DevicesZimperium · published May 6, 2026 · Tier A
  7. [7]Zimperium Arms Security and Fraud Teams with AI-Empowered Mobile App Response Agent to Counter Growing Mobile AttacksZimperium · published May 6, 2026 · Tier A
  8. [8]Zimperium Careers - ZimperiumZimperium · undated page, accessed November 3, 2026 · Tier A
  9. [9]Zimperium Global EventsZimperium · undated page, accessed November 3, 2026 · Tier A
  10. [10]Zimperium Appoints Alistaire Davidson as Chief Financial OfficerZimperium · published December 3, 2025 · Tier A
  11. [11]Zimperium zLabs Uncovers RedWing Mobile Malware-as-a-Service Platform Powering Full Android Device CompromiseZimperium · published July 7, 2026 · Tier A

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