CISO Tribune

Vendor comparison · 2 companies

Fleuret AI vs Synack

Fleuret AI sells pentesting that combines artificial intelligence and offensive expertise. Synack delivers continuous penetration testing as a service (PTaaS) that combines agentic AI, the Synack Platform and the Synack Red Team. CISO Tribune files both under Penetration testing and red team services. 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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  • Fleuret AI
  • Synack
Fleuret AI vs Synack: Products, Customers and Funding Compared
Fleuret AIFleuret AI sells pentesting that combines artificial intelligence and offensive expertise.fleuret.aiSynackSynack delivers continuous penetration testing as a service (PTaaS) that combines agentic AI, the Synack Platform and the Synack Red Team.synack.com
What it sells
  • Émile[4][6]Runs pentests on applications, APIs and infrastructure and ships a replayable exploit with every finding.
  • Hortense[4][5][6]Tells customers what to test next, and when.
  • Sara AI Pentesting[3][4][5]Sara AI Pentesting identifies, validates and prioritizes vulnerabilities across the enterprise attack surface.
  • Synack Red Team[3][4][5][6]Synack PTaaS brings the Synack Red Team, a community of incentivized security researchers, to the attack surface.
  • Synack Platform[3][4][5][6][7]Synack's PTaaS offering includes the Synack Platform for asset and vulnerability management, test results, reports and analytics.
  • Penetration Testing as a Service (PTaaS)Synack delivers continuous penetration testing as a service (PTaaS).
  • Active Offense[13]Synack's Active Offense solution combines continuous attack surface discovery with autonomous exploit validation and human-led expert analysis.
  • Managed VDP[15]Synack's Managed VDP handles vulnerability triage with remediation guidance, coordinates researcher recognition and delivers data to support CISA or Board reporting.
  • Synack Missions[14]Synack Missions use the Synack Red Team to complete specific tasks and provide documentation of their work.
Categories
Headquarters
Not stated on its pagesRedwood City, United States[2]
Founded
Not stated on its pages2013[1]
Ownership and funding
Privately heldNot stated on its pages
Named customers
Not stated on its pagesNot stated on its pages
Recent news
  • October 5, 2026Fleuret AI closed a €4M pre-seed round led by RAISE Ventures, with participation from Auriga Cyber Ventures, Wind Capital and Better Angle.[2]
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
Its published guides address CISOs at credit institutions and at SaaS companies. Fleuret describes its service as adding to the people already in place, such as a customer's team, MSSP or PASSI-certified firm. Its reports are signed and mapped to DORA, NIS2 and ISO 27001. Hosting and inference run on Scaleway in Paris.From its own pages, Synack sells its tests to organizations under a flat-fee model. Synack describes its Managed VDP as an option for responsible disclosure for federal teams. Synack describes pulling reports on third party providers or potential M&A targets. Synack describes report generation for executive audiences and compliance auditors. Synack describes testing for mobile, API, web and host assets, and describes Sara AI Pentesting as working across the enterprise attack surface.
Last verified
October 21, 2026September 27, 2026

Where they overlap

  • Fleuret AI and Synack are both filed under Penetration testing and red team services.

Where they differ, field by field

  • Fleuret AI's primary category is Breach simulation and automated pen-testing; Synack's is Bug bounty and crowdsourced testing.
  • Fleuret AI is also filed under Static application security testing and Dynamic application security testing.
  • Fleuret AI lists Émile and Hortense. Synack lists Sara AI Pentesting, Synack Red Team, Synack Platform, Penetration Testing as a Service (PTaaS), Active Offense and 2 more.
  • Synack is headquartered in Redwood City, United States.
  • Synack was founded in 2013.
  • Fleuret AI is privately held.

What it sells: Fleuret AI

What Émile does[4][6]
A separate validator confirms every finding with a non-destructive exploit. Every finding ships with a working, replayable exploit. Each finding lands as a ticket with its exploit, an owner and a remediation, pushed to Jira, Linear or Slack.
What Hortense does[4][5][6]
Hortense maps a customer's estate from domain to database. Hortense crosses what changed in the code with what is exposed on the internet and what past pentests found. Hortense prepares the scope, and a person with launch rights starts the pentest, which Émile runs. Hortense comes with every yearly plan.

What it sells: Synack

What Sara AI Pentesting does[3][4][5]
Sara's AI-powered triage is combined with human-in-the-loop expertise to filter which vulnerabilities are exploitable. Synack combines Sara AI Pentesting, the Synack Red Team and the Synack Platform.
What Synack Red Team does[3][4][5][6]
Synack describes a community of 1,500 security researchers from around the world. Synack can limit testing to members of the Synack Red Team who meet certain criteria, such as US-only researchers or Five Eyes only.
What Synack Platform does[3][4][5][6][7]
Synack provides real time analytics of exploitable vulnerabilities that are found and verified in the Synack Platform. Synack lets users issue a patch verification request through the platform, which activates a researcher to test the patch. The Synack API integrates vulnerability findings with tools such as ServiceNow, Jira and Azure DevOps.
What Penetration Testing as a Service (PTaaS) does
Synack lets users choose and launch penetration testing services from the platform on demand, and start, audit and stop tests. Synack PTaaS is available 24/7 via the Synack Platform. Synack tests at multiple stages of development and assists developer and QA teams through real-time reporting and patch verification.
What Active Offense does[13]
Synack continuously discovers, classifies and segments internet-facing and newly exposed assets. Sara's AI-powered triage is combined with human-in-the-loop expertise to filter which vulnerabilities are exploitable.
What Managed VDP does[15]
Synack's Managed VDP is offered as an option for responsible disclosure to federal teams. VDPs provide enterprise security teams a safe and legal means to be notified of vulnerabilities on externally facing infrastructure by the public.

Questions about Fleuret AI and Synack

What do Fleuret AI and Synack sell?
Fleuret AI sells Émile and Hortense. Synack sells Sara AI Pentesting, Synack Red Team, Synack Platform, Penetration Testing as a Service (PTaaS), Active Offense and 2 more.
Are Fleuret AI and Synack in the same category?
They share Penetration testing and red team services. Fleuret AI's primary category is Breach simulation and automated pen-testing and Synack's is Bug bounty and crowdsourced testing.
Where are Fleuret AI and Synack headquartered?
Synack is headquartered in Redwood City, United States.
When were Fleuret AI and Synack founded?
Synack was founded in 2013.
Who owns Fleuret AI and Synack?
Fleuret AI is privately held.
Who are Fleuret AI and Synack sold to?
Its published guides address CISOs at credit institutions and at SaaS companies. From its own pages, Synack sells its tests to organizations under a flat-fee model.
What have Fleuret AI and Synack announced recently?
October 5, 2026: Fleuret AI closed a €4M pre-seed round led by RAISE Ventures, with participation from Auriga Cyber Ventures, Wind Capital and Better Angle.

About Fleuret AI

Fleuret AI sells pentesting that combines artificial intelligence and offensive expertise. Fleuret uses agentic AI to simulate real attacks on its customers' systems. Émile runs pentests on customer applications, APIs and infrastructure and ships a replayable exploit with every finding. Hortense tells customers what to test next, and when. Fleuret states that its service is built and hosted in Europe.[1][3][4]

A separate validator confirms every finding with a non-destructive exploit. Several agents test the surface at once and reproduce every finding before it is reported. Every finding ships with a working, replayable exploit, and a finding that cannot be reproduced is left out of the report. Fleuret states that proofs of concept are read-only and non-destructive. Fleuret states that its orchestration is deterministic code, not a free-running model, and that it ends in a signed report.[4][5]

Each finding becomes a ticket with its exploit, an owner and a remediation, pushed to Jira, Linear or Slack. Customers can launch a full pentest the day an application changes and can re-test a fix whenever they want. Fleuret reports contain a replayable exploit for every finding, logged re-tests, the coverage of what was tested and held, and a signed report mapped to DORA, NIS2 and ISO 27001.[4]

Hortense maps a customer's estate from domain to database and crosses what changed in the code with what is exposed on the internet and what past pentests found. Hortense connects what a customer already has into a view of risk: what to test, what to fix first, what can wait, and why. For each application, Hortense weighs the last pentest, what changed since, and how close it sits to a crown jewel. Hortense then recommends a pentest with its reasons and prepares it, and the customer approves it. Hortense prepares the scope, and a person with launch rights starts the pentest, which Émile runs. Hortense comes with every yearly plan.[1][4][6]

Fleuret sells pentests from 4,000 euros per test. Each extra credit costs €4,000, whatever the plan. Credits are valid for the subscription year and do not carry over to the next one. A first pentest is credited in full against a yearly plan taken within 60 days.[5][7]

Hosting and inference run on Scaleway in Paris, which Fleuret describes as a European provider. Fleuret runs open-weight models (gpt-oss, Kimi K2.5) on H100 GPUs at Scaleway in Paris. Engagement data does not leave that environment to reach a third-party model API. Engagement data, namely vulnerabilities, exploitation evidence and reports, is retained for 18 months in a per-client segmented European environment, then deleted. Fleuret AI states that stored data is encrypted with AES-256 and that communications use TLS 1.2 or higher. Fleuret AI states that its production data is hosted in data centers within the European Union. Fleuret AI states that it is compliant with the General Data Protection Regulation. Fleuret AI gives its address as 60 Rue François 1er, 75008 Paris, France.[4][8]

Fleuret AI publishes practical guides for CISOs scoping penetration testing under DORA, NIS2, ISO 27001, SOC 2 and PCI DSS. One guide covers how SaaS CISOs decide scope and evidence pentest against Article 21(2)(e) and 21(2)(f).[1][4][5][9]

Fleuret AI on the record

Sources

Fleuret AI full record

  1. [1]fleuret.aiFleuret AI · fleuret.ai · undated page, accessed October 21, 2026 · Tier A
  2. [2]Fleuret raises €4M pre-seed for agentic pentestingFleuret AI · published October 5, 2026 · Tier A
  3. [3]About Fleuret | Agentic AI pentestingFleuret AI · undated page, accessed November 10, 2026 · Tier A
  4. [4]Fleuret | AI-powered automated pentestingFleuret AI · undated page, accessed November 10, 2026 · Tier A
  5. [5]Pricing | Pentest credits, platform included | FleuretFleuret AI · undated page, accessed November 10, 2026 · Tier A
  6. [6]Hortense, your offsec brain | Know what to test next, and when | FleuretFleuret AI · undated page, accessed November 10, 2026 · Tier A
  7. [7]SOC 2 and ISO 27001 cost calculator | FleuretFleuret AI · undated page, accessed November 10, 2026 · Tier A
  8. [8]Security Policy | FleuretFleuret AI · published March 11, 2026 · Tier A
  9. [9]Compliance Pentest Guides | DORA, NIS2, ISO 27001 | FleuretFleuret AI · undated page, accessed November 10, 2026 · Tier A

Synack full record

  1. [1]AboutSynack · synack.com · undated page, accessed September 27, 2026 · Tier A
  2. [2]ContactSynack · synack.com · undated page, accessed September 27, 2026 · Tier A
  3. [3]AI + Human Penetration Testing | PTaaS | SynackSynack · undated page, accessed October 29, 2026 · Tier A
  4. [4]Penetration Testing Platform | Pentesting platform | SynackSynack · undated page, accessed October 29, 2026 · Tier A
  5. [5]Continuous Threat Exposure Management (CTEM) | SynackSynack · undated page, accessed November 10, 2026 · Tier A
  6. [6]Penetration Testing as a Service | Synack PTaaSSynack · undated page, accessed November 10, 2026 · Tier A
  7. [7]Vulnerability Management Solutions | Continuous Vulnerability ManagementSynack · undated page, accessed November 10, 2026 · Tier A
  8. [8]Cloud Penetration Testing Services | SynackSynack · undated page, accessed November 10, 2026 · Tier A
  9. [9]API Penetration Testing Services | SynackSynack · undated page, accessed November 10, 2026 · Tier A
  10. [10]Third Party Risk Management | Pentesting | SynackSynack · undated page, accessed November 10, 2026 · Tier A
  11. [11]AI Penetration Testing | LLM Pentest Services | SynackSynack · undated page, accessed November 10, 2026 · Tier A
  12. [12]Cybersecurity Skills Gap Solutions | SynackSynack · undated page, accessed November 10, 2026 · Tier A
  13. [13]Active Offense | SynackSynack · undated page, accessed November 10, 2026 · Tier A
  14. [14]Compliance Penetration Testing | PCI, SOC 2 | SynackSynack · undated page, accessed November 10, 2026 · Tier A
  15. [15]Vulnerability Disclosure Program | Synack VDPSynack · undated page, accessed November 10, 2026 · Tier A

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