CISO Tribune

Vendor comparison · 2 companies

Assail vs Red Sentry

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. Red Sentry sells offensive security services, from one-off penetration tests to ongoing PTaaS (Penetration Testing as a Service) partnerships. 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
  • Red Sentry
Assail vs Red Sentry: 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.comRed SentryRed Sentry sells offensive security services, from one-off penetration tests to ongoing PTaaS (Penetration Testing as a Service) partnerships.redsentry.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.
  • PTaaS[1][3][5]A platform that gives teams a central place to track findings, remediation, retesting, communication, and report delivery.
  • Source Code Review[7]Tool-assisted static analysis paired with manual security review and validation.
  • Red Teaming[4]A simulated full-scale attack that tests an organization's people, processes, and technology.
  • Physical Security Assessment[9]Tests whether physical controls, people, and processes prevent unauthorized access to agreed locations and objectives.
Categories
Headquarters
Not stated on its pagesNot stated on its pages
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]
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: Not stated on its pages
  • 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, Red Sentry sells its testing services to organizations of all sizes. For mature security teams, Red Sentry offers advanced Red Teaming and adversary simulation. Red Sentry addresses buyers whose auditors require more than a scan. Red Sentry reviews both traditionally developed and AI-assisted codebases.
Last verified
October 21, 2026November 13, 2026

Where they overlap

  • Assail and Red Sentry 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; Red Sentry's is Penetration testing and red team services.
  • Assail is also filed under API security and Mobile security. Red Sentry is also filed under Vulnerability management.
  • Assail lists Ares, Reaper and Assail Anywhere. Red Sentry lists PTaaS, Source Code Review, Red Teaming and Physical Security Assessment.
  • 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: Red Sentry

What PTaaS does[1][3][5]
PTaaS means penetration testing as a service. Every Red Sentry engagement includes full access to the PTaaS platform at no extra cost. The platform offers Jira integration for pushing remediation tickets to engineering teams. Portal access lets teams track project status, access reports and evidence, and manage remediation.
What Source Code Review does[7]
Source code review is a standalone Red Sentry service. Red Sentry reviews traditionally developed and AI-assisted codebases using the same human-led security review process. One round of remediation testing is included when requested within 90 days of report delivery, unless otherwise scoped.
What Red Teaming does[4]
Red Sentry follows the MITRE ATT&CK framework to simulate the entire lifecycle of a breach. Red team work includes testing endpoint protection (EDR/AV) by attempting to execute custom malware or tools. Red Sentry collaborates with the Blue Team to explain how controls were bypassed.
What Physical Security Assessment does[9]
Physical security assessment is a standalone Red Sentry service. Red Sentry agrees written authorization and rules of engagement before testing starts. Findings are documented with photographic evidence, steps to recreate them, severity, and remediation guidance.

Questions about Assail and Red Sentry

What do Assail and Red Sentry sell?
Assail sells Ares, Reaper and Assail Anywhere. Red Sentry sells PTaaS, Source Code Review, Red Teaming and Physical Security Assessment.
Are Assail and Red Sentry in the same category?
They share Breach simulation and automated pen-testing. Assail's primary category is Breach simulation and automated pen-testing and Red Sentry's is Penetration testing and red team services.
Who owns Assail and Red Sentry?
Assail is privately held.
Who are Assail and Red Sentry 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, Red Sentry sells its testing services to organizations of all sizes.
What have Assail and Red Sentry 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

Red Sentry full record

  1. [1]redsentry.comRed Sentry · redsentry.com · undated page, accessed November 13, 2026 · Tier A
  2. [2]DetailsRed Sentry · app.redsentry.com · undated page, accessed November 13, 2026 · Tier A
  3. [3]Red Sentry | Human-Led Penetration Testing & PTaaSRed Sentry · undated page, accessed November 13, 2026 · Tier A
  4. [4]Penetration Testing & Offensive Security Services | Red SentryRed Sentry · undated page, accessed November 13, 2026 · Tier A
  5. [5]Web Application Penetration Testing Services | Red SentryRed Sentry · undated page, accessed November 13, 2026 · Tier A
  6. [6]API Penetration Testing Services | Red SentryRed Sentry · undated page, accessed November 13, 2026 · Tier A
  7. [7]Secure Code Review Services | Red SentryRed Sentry · undated page, accessed November 13, 2026 · Tier A
  8. [8]Cloud Penetration Testing (AWS, Azure, GCP) | Red SentryRed Sentry · undated page, accessed November 13, 2026 · Tier A
  9. [9]Physical Security Pentesting | Red SentryRed Sentry · undated page, accessed November 13, 2026 · Tier A
  10. [10]Red Teaming Services: Objective-Based Attack Sims | Red SentryRed Sentry · undated page, accessed November 13, 2026 · Tier A
  11. [11]Social Engineering & Phishing Services | Red SentryRed Sentry · undated page, accessed November 13, 2026 · Tier A
  12. [12]SOC 2 Penetration Testing Support | Red SentryRed Sentry · undated page, accessed November 13, 2026 · Tier A
  13. [13]Network Pen Testing (Internal & External) | Red SentryRed Sentry · undated page, accessed November 13, 2026 · Tier A
  14. [14]Pen Testing Services for Modern Organizations | Red SentryRed Sentry · undated page, accessed November 13, 2026 · Tier A

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