CISO Tribune

Vendor comparison · 2 companies

Assail vs Upwind

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. Upwind sells security for cloud workloads, APIs and agents, combining their context with runtime intelligence to identify critical risks and catch new attacks in real time. CISO Tribune files both under API 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
  • Upwind
Assail vs Upwind: 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.comUpwindUpwind sells security for cloud workloads, APIs and agents, combining their context with runtime intelligence to identify critical risks and catch new attacks in real time.upwind.io
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.
  • Cloud Security[1]A CNAPP that combines posture, workload and runtime signals to find and prioritize cloud risks.
  • AI Security[8]Monitors AI workloads and agents within the cloud environment to identify risky configurations and behaviour.
  • Agentic Security[1][7]Watches autonomous AI agents and their skills or MCP connections for malicious or high-risk activity.
  • Cloud Security Posture Management (CSPM)[1]Checks cloud account and resource configuration against security policy on an ongoing basis.
  • Cloud Infrastructure Entitlements Management (CIEM)[1]Analyses identity permissions across cloud platforms to reduce excess access.
  • Cloud Detection & Response (CDR)[1]Correlates runtime signals and cloud activity logs to detect and respond to threats as they occur.
Categories
Headquarters
Not stated on its pagesNot stated on its pages
Founded
Not stated on its pages2022[2][4]
Ownership and funding
Privately heldPrivately held[4][11]
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[11]
  • 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.Upwind's API offering is aimed at organizations that run APIs in the cloud. Upwind's AI security offering is aimed at organizations that run AI applications on cloud infrastructure. Upwind's code security features address teams practising shift-left security in AI-native development.
Last verified
October 21, 2026November 5, 2026

Where they overlap

  • Assail and Upwind are both filed under API security.
  • Both are privately held.

Where they differ, field by field

  • Assail's primary category is Breach simulation and automated pen-testing; Upwind's is Cloud-native application protection (CNAPP).
  • Assail is also filed under Mobile security. Upwind is also filed under Cloud security posture management and Cloud detection and response.
  • Assail lists Ares, Reaper and Assail Anywhere. Upwind lists Cloud Security, AI Security, Agentic Security, Cloud Security Posture Management (CSPM), Cloud Infrastructure Entitlements Management (CIEM) and 1 more.
  • Upwind was founded in 2022.

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.

Questions about Assail and Upwind

What do Assail and Upwind sell?
Assail sells Ares, Reaper and Assail Anywhere. Upwind sells Cloud Security, AI Security, Agentic Security, Cloud Security Posture Management (CSPM), Cloud Infrastructure Entitlements Management (CIEM) and 1 more.
Are Assail and Upwind in the same category?
They share API security. Assail's primary category is Breach simulation and automated pen-testing and Upwind's is Cloud-native application protection (CNAPP).
When were Assail and Upwind founded?
Upwind was founded in 2022.
Who owns Assail and Upwind?
Assail is privately held. Upwind is privately held.
Who are Assail and Upwind sold to?
From its own pages, Assail sells mainly to security teams in manufacturing, financial services, federal and state government, automotive, retail, and defense. Upwind's API offering is aimed at organizations that run APIs in the cloud.
What have Assail and Upwind 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

Upwind full record

  1. [1]upwind.ioUpwind · upwind.io · undated page, accessed November 5, 2026 · Tier A
  2. [2]NewsroomUpwind · upwind.io · undated page, accessed November 5, 2026 · Tier A
  3. [3]Upwind Security: Cloud & AI Security for the Realtime EraUpwind · undated page, accessed November 10, 2026 · Tier A
  4. [4]About - UpwindUpwind · undated page, accessed November 10, 2026 · Tier A
  5. [5]Upwind Case Studies: Real-World Cloud Security Success StoriesUpwind · undated page, accessed November 10, 2026 · Tier A
  6. [6]Run - UpwindUpwind · undated page, accessed November 10, 2026 · Tier A
  7. [7]Agentic Security - UpwindUpwind · undated page, accessed November 10, 2026 · Tier A
  8. [8]AI Security Platform - UpwindUpwind · undated page, accessed November 10, 2026 · Tier A
  9. [9]Runtime API Security: Discover and Protect APIs in Real TimeUpwind · undated page, accessed November 10, 2026 · Tier A
  10. [10]Build - UpwindUpwind · undated page, accessed November 10, 2026 · Tier A
  11. [11]Upwind Reviews 2026: Details, Pricing, & FeaturesG2 · undated page, accessed November 10, 2026 · Tier C

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