CISO Tribune

Vendor comparison · 2 companies

Assail vs F5

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. F5 sells the F5 Application Delivery and Security Platform (ADSP), which F5 describes as keeping applications and APIs fast, available, and secure across complex environments. 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
  • F5
Assail vs F5: 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.comF5F5 sells the F5 Application Delivery and Security Platform (ADSP), which F5 describes as keeping applications and APIs fast, available, and secure across complex environments.f5.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.
  • F5 Application Delivery and Security Platform (ADSP)[1]A platform that keeps applications and APIs fast, available, and secure across complex environments.
  • F5 Insight for ADSP[9]Observability and fleet management for ops teams.
  • F5 AI Security Platform[10]A platform that covers AI application security and AI workforce security.
  • F5 Distributed Cloud App Connect[12]Connects applications, clusters, and services across clouds, data centers, and remote sites.
  • BIG-IP Container Ingress Services[14]Lets teams manage BIG-IP from Kubernetes or OpenShift.
Categories
Headquarters
Not stated on its pagesSeattle, United States[3]
Founded
Not stated on its pagesNot stated on its pages
Ownership and funding
Privately heldPublic (NASDAQ: FFIV)[2][4][5][7][17]
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]
  • June 22, 2026F5 introduced its AI Security Platform and announced the acquisition of SurePath AI as part of the launch.[17]
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 4, 2026[5]
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, F5 sells mainly to organisations that run applications across multiple clouds, on-premises data centers, and edge sites. F5 addresses DevOps teams and ops teams that want network observability and control over their applications. F5 sells its Diameter products to service providers and mobile operators. F5 names customers such as a medical organization, a European asset manager, and a national public safety technology agency. F5 positions its AI security offerings for organisations that need to govern workforce AI usage across users, agents, and third-party services.
Last verified
October 21, 2026September 27, 2026

Where they overlap

  • Assail and F5 are both filed under API security.

Where they differ, field by field

  • Assail's primary category is Breach simulation and automated pen-testing; F5's is WAF and WAAP.
  • Assail is also filed under Mobile security.
  • Assail lists Ares, Reaper and Assail Anywhere. F5 lists F5 Application Delivery and Security Platform (ADSP), F5 Insight for ADSP, F5 AI Security Platform, F5 Distributed Cloud App Connect and BIG-IP Container Ingress Services.
  • F5 is headquartered in Seattle, United States.
  • Assail is privately held. F5 is a public company listed on NASDAQ as FFIV.

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: F5

What F5 Application Delivery and Security Platform (ADSP) does[1]
F5 offers ADSP through term subscriptions, the Flex Consumption Plan (FCP), and perpetual licensing. F5 says its security offering covers sensitive data, apps, and APIs on a single platform.
What F5 Insight for ADSP does[9]
F5 Insight for ADSP enables ops teams to find answers more quickly, optimize deployments, and execute updates faster. Guided workflows distribute and install software patches, updates, and upgrades across an entire fleet in parallel. Deployment is possible in AWS, Azure, Google Cloud, and others, and in on-prem or fully air-gapped environments.
What F5 AI Security Platform does[10]
The F5 AI Security Platform helps teams operationalize AI governance with customizable policy enforcement and auditability for every model, user, and agent action. A continuous loop of testing and runtime protection secures deployed AI systems. Workforce AI usage is discovered, classified, and governed across users, agents, and third-party services.
What F5 Distributed Cloud App Connect does[12]
F5 Distributed Cloud App Connect securely connects applications, clusters, and services across any cloud provider, on-premises data center, or remote site. DevOps teams get network observability and control.
What BIG-IP Container Ingress Services does[14]
BIG-IP Container Ingress Services (CIS) lets users manage an F5 BIG-IP device from Kubernetes or OpenShift using either environment's native CLI/API. CIS watches the Kubernetes API for specially formatted resources and updates the BIG-IP system configuration accordingly. F5 describes Container Ingress Services as free and open-source.

Questions about Assail and F5

What do Assail and F5 sell?
Assail sells Ares, Reaper and Assail Anywhere. F5 sells F5 Application Delivery and Security Platform (ADSP), F5 Insight for ADSP, F5 AI Security Platform, F5 Distributed Cloud App Connect and BIG-IP Container Ingress Services.
Are Assail and F5 in the same category?
They share API security. Assail's primary category is Breach simulation and automated pen-testing and F5's is WAF and WAAP.
Where are Assail and F5 headquartered?
F5 is headquartered in Seattle, United States.
Who owns Assail and F5?
Assail is privately held. F5 is a public company listed on NASDAQ as FFIV.
Who are Assail and F5 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, F5 sells mainly to organisations that run applications across multiple clouds, on-premises data centers, and edge sites.
What have Assail and F5 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. June 22, 2026: F5 introduced its AI Security Platform and announced the acquisition of SurePath AI as part of the launch.

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

F5 full record

  1. [1]f5.comF5 · f5.com · undated page, accessed September 27, 2026 · Tier A
  2. [2]Earnings q3 fy26F5 · f5.com · undated page, accessed September 27, 2026 · Tier A
  3. [3]otcmarkets.comF5, Inc. via SEC EDGAR (Form 10-K) · otcmarkets.com · published November 25, 2025 · Tier A
  4. [4]Enterprise Application Security and Delivery Solutions | F5F5 · undated page, accessed October 25, 2026 · Tier A
  5. [5]F5 Reviews, Ratings & Features 2026 | Gartner Peer InsightsGartner Peer Insights · undated page, accessed October 25, 2026 · Tier C
  6. [6]Bot and Risk Management | F5F5 · undated page, accessed November 4, 2026 · Tier A
  7. [7]Hybrid Multicloud App Security & Delivery for the AI Era | F5F5 · undated page, accessed November 4, 2026 · Tier A
  8. [8]Unified Management and Automation | F5F5 · undated page, accessed November 4, 2026 · Tier A
  9. [9]Operational Intelligence and Response for F5 ADSP | F5F5 · undated page, accessed November 4, 2026 · Tier A
  10. [10]F5 AI Security Platform | F5F5 · undated page, accessed November 4, 2026 · Tier A
  11. [11]Hybrid Multicloud Network Management Platform | F5F5 · undated page, accessed November 4, 2026 · Tier A
  12. [12]Distributed application delivery solutions | F5F5 · undated page, accessed November 4, 2026 · Tier A
  13. [13]F5 Distributed Cloud Synthetic Monitoring | F5F5 · undated page, accessed November 4, 2026 · Tier A
  14. [14]BIG-IP Container Ingress Services | F5F5 · undated page, accessed November 4, 2026 · Tier A
  15. [15]BIG-IP Diameter Traffic Manager | F5F5 · undated page, accessed November 4, 2026 · Tier A
  16. [16]NFV Packaged Solutions | F5F5 · undated page, accessed November 4, 2026 · Tier A
  17. [17]F5 launches AI Security Platform to put security leaders in control of enterprise AI riskF5 · published June 22, 2026 · Tier A

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