CISO Tribune

Vendor comparison · 2 companies

Aembit vs Onyx Security

Aembit enforces every agent access request through a verified identity, short-lived authorization, and a fully attributed compliance log. Onyx Security sells a secure control plane for AI agents and models. CISO Tribune files both under Non-human identity 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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  • Aembit
  • Onyx Security
Aembit vs Onyx Security: Products, Customers and Funding Compared
AembitAembit enforces every agent access request through a verified identity, short-lived authorization, and a fully attributed compliance log.aembit.ioOnyx SecurityOnyx Security sells a secure control plane for AI agents and models.onyx.security
What it sells
  • Aembit Edge[11]Intercepts outgoing workload requests and validates identity.
  • AI Security[1][7]Onyx provides the runtime and posture layer of the Onyx Secure AI Control Plane.
  • MCP Gateway[8]The MCP Gateway governs the agent-to-tool surface.
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 held[5]Not stated on its pages
Named customers
Not stated on its pagesNot stated on its pages
Recent news
Not stated on its pages
  • July 29, 2026Onyx Security announced a $113 million Series B funding round led by Bessemer Venture Partners.[15]
  • March 12, 2026Onyx Security officially launched operations after securing $40 million in initial funding.[14]
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, Aembit sells mainly to organizations that run AI agents and traditional workloads and want one identity model across both. Its named customer types include a managed service provider that deploys AI agents into customer environments, a retailer running an enterprise-wide workload IAM deployment, an investment firm deploying Claude agents, and a global property management company. Aembit says it works in any cloud, SaaS, or on-prem environment. Its pages are aimed at security and engineering teams that want to remove stored secrets from agents and workloads.From its own pages, Onyx Security sells mainly to security, governance, and AI teams that need control over AI agent adoption across the enterprise. Onyx Security describes a single platform for security, governance, and infrastructure teams. Onyx Security offers cloud, hybrid, or self-hosted options for organisations with sensitive data residency requirements. Onyx Security presents one console for AI agents and models across SaaS, cloud, endpoint, and code environments. Onyx Security names security, finance, and platform teams as the teams that share its usage, cost, and policy ledger.
Last verified
November 9, 2026October 19, 2026

Where they overlap

  • Aembit and Onyx Security are both filed under Non-human identity security.

Where they differ, field by field

  • Aembit's primary category is Non-human identity security; Onyx Security's is AI model and agent security.
  • Onyx Security is also filed under AI governance and Workforce AI usage security.
  • Aembit lists Aembit Edge. Onyx Security lists AI Security and MCP Gateway.
  • Aembit is privately held.

What it sells: Aembit

What Aembit Edge does[11]
Aembit Edge intercepts outgoing requests from a client workload. It validates the workload's identity through cryptographic attestation using trust providers such as AWS, Azure, GCP, Kubernetes and GitHub Actions.

What it sells: Onyx Security

What AI Security does[1][7]
Onyx provides the runtime and posture layer of the Onyx Secure AI Control Plane. Onyx inspects every prompt, tool call, and model response inline across browser AI, coding assistants, desktop AI agents, cloud workloads, and MCP servers. Onyx offers five enforcement actions: alert, block, mask, steer, or ask.
What MCP Gateway does[8]
The MCP Gateway governs the agent-to-tool surface. Every tool call an agent makes to an MCP server gets inspected and policy-enforced. MCP Gateway coverage spans the MCP ecosystem, including servers using dynamic client registration and popular servers like GitHub.

Questions about Aembit and Onyx Security

What do Aembit and Onyx Security sell?
Aembit sells Aembit Edge. Onyx Security sells AI Security and MCP Gateway.
Are Aembit and Onyx Security in the same category?
They share Non-human identity security. Aembit's primary category is Non-human identity security and Onyx Security's is AI model and agent security.
Who owns Aembit and Onyx Security?
Aembit is privately held.
Who are Aembit and Onyx Security sold to?
From its own pages, Aembit sells mainly to organizations that run AI agents and traditional workloads and want one identity model across both. From its own pages, Onyx Security sells mainly to security, governance, and AI teams that need control over AI agent adoption across the enterprise.
What have Aembit and Onyx Security announced recently?
July 29, 2026: Onyx Security announced a $113 million Series B funding round led by Bessemer Venture Partners.

About Aembit

Aembit enforces every agent access request through a verified identity, short-lived authorization, and a fully attributed compliance log. The company sells an identity control plane aimed at AI agents and at traditional workloads.[6]

Aembit says the same control plane governs workforce agents, autonomous agents, and traditional workloads, with one identity model, one policy engine, and one audit trail. Workforce agents are internal copilots, coding assistants, and personal agents that employees connect to work resources. Autonomous agents act independently on a schedule, on an event, or in a business process, with no human in the loop. Aembit says the same trust model applies to custom agents and to managed platforms like Claude and Copilot Studio.

On credentials, Aembit replaces long-lived credentials with short-lived, scoped credentials issued at runtime. Aembit can either mint short-lived credentials, vault them, or pull credentials from an existing vault like Amazon Key Manager, Azure Key Vault, or HashiCorp Vault. Aembit pulls contextual information from existing tools such as Crowdstrike Falcon or Wiz to assess operating characteristics of AI agents and workloads before giving them access to sensitive data and systems.[1][6]

The platform has several parts. Aembit Cloud is the SaaS-based control center and provides policy definition, policy management, and policy evaluation. Aembit's MCP Identity Gateway is a control point that exchanges an AI agent's access token for the appropriate MCP server credentials, without exposing those credentials to the agent. Aembit Edge intercepts outgoing requests from a client workload and validates its identity through cryptographic attestation using trust providers such as AWS, Azure, GCP, Kubernetes and GitHub Actions. A trust provider is a federation relationship that lets Aembit cryptographically verify the identity of an agent or workload, and a credential provider is a federation relationship with target services such as an MCP server, a database, or a cloud resource.[6][7][11]

Aembit describes several access controls. Tool filtering allows or blocks individual tools, so a read-only agent stays read-only. One click cuts off an agent's access immediately while leaving any associated user's sessions or permissions unaffected. Authorization Events are identity-based logs that show each approved or denied authorization attempt with reasons.[6]

Aembit says it augments the identity providers, protocols, and standards already in a customer's stack, with no proprietary SDK and no lock-in. Aembit integrates with API gateways such as Kong, AWS API Gateway, and Apigee by issuing short-lived, workload-bound JWTs or OAuth tokens that the gateway validates on inbound requests. Aembit is designed to be integrated into customer systems and run at production speed and scale via infrastructure as code.[6][12]

On compliance, Aembit says it helps organizations satisfy the identity- and access-related requirements in standards such as NIST, SOC 2, HIPAA, and PCI DSS by eliminating static credentials and enforcing consistent, policy-driven access for workloads. Its published case studies include Red Cup IT, a managed service provider, and a Fortune 250 retailer that secures access to HashiCorp Vault. The terms of service name Aembit, Inc as the contracting company and define its services as its website and its web-based and downloadable workload identity and access management services.[2][3][4][6][7][8][9][10][13]

Aembit on the record

Sources

Aembit full record

  1. [1]aembit.ioAembit · aembit.io · undated page, accessed September 27, 2026 · Tier A
  2. [2]Aembit launches with 16 6m to secure workload accessAembit · aembit.io · published March 20, 2023 · Tier A
  3. [3]Aembit raises 25 million in series a funding for non human identity and access managementAembit · aembit.io · published September 12, 2024 · Tier A
  4. [4]Why Aembit | AembitAembit · undated page, accessed October 23, 2026 · Tier A
  5. [5]Aembit | Identity Control Plane for AI AgentsAembit · undated page, accessed October 23, 2026 · Tier A
  6. [6]Product diagram interactive | AembitAembit · undated page, accessed October 23, 2026 · Tier A
  7. [7]Trust and Credential Providers | AembitAembit · undated page, accessed October 23, 2026 · Tier A
  8. [8]Terms of Service - AembitAembit · published July 14, 2026 · Tier A
  9. [9]About Our Mission and Team - AembitAembit · undated page, accessed October 23, 2026 · Tier A
  10. [10]Case Studies - AembitAembit · undated page, accessed October 23, 2026 · Tier A
  11. [11]Service Account - AembitAembit · undated page, accessed November 5, 2026 · Tier A
  12. [12]Aembit vs. API Security / API GatewaysAembit · undated page, accessed November 5, 2026 · Tier A
  13. [13]Cybersecurity Compliance - AembitAembit · undated page, accessed November 5, 2026 · Tier A

Onyx Security full record

  1. [1]onyx.securityOnyx Security · onyx.security · undated page, accessed October 19, 2026 · Tier A
  2. [2]The Secure AI Control Plane for the Agentic Era | OnyxOnyx Security · undated page, accessed November 10, 2026 · Tier A
  3. [3]About Onyx | The Team Behind the AI Control PlaneOnyx Security · undated page, accessed November 10, 2026 · Tier A
  4. [4]One Platform to Discover and Control Every AI Agent | OnyxOnyx Security · undated page, accessed November 10, 2026 · Tier A
  5. [5]AI Observability – Discover Every Agent & Session | OnyxOnyx Security · undated page, accessed November 10, 2026 · Tier A
  6. [6]AI Agent Security | Block Prompt Injection in Real TimeOnyx Security · undated page, accessed November 10, 2026 · Tier A
  7. [7]AI Governance Platform Built for the EU AI Act | OnyxOnyx Security · undated page, accessed November 10, 2026 · Tier A
  8. [8]AI Orchestration – Governed Routing & Control | OnyxOnyx Security · undated page, accessed November 10, 2026 · Tier A
  9. [9]AI ROI Platform – Prove Value & Control Costs | OnyxOnyx Security · undated page, accessed November 10, 2026 · Tier A
  10. [10]Secure Claude Enterprise with Onyx | Anthropic IntegrationOnyx Security · undated page, accessed November 10, 2026 · Tier A
  11. [11]Secure ChatGPT Enterprise with Onyx | OpenAI IntegrationOnyx Security · undated page, accessed November 10, 2026 · Tier A
  12. [12]Secure Amazon Bedrock Agents | Onyx IntegrationOnyx Security · undated page, accessed November 10, 2026 · Tier A
  13. [13]Copilot Studio Security – Discover, Govern & Control | OnyxOnyx Security · undated page, accessed November 10, 2026 · Tier A
  14. [14]Israeli cyber firm Onyx Security launches operations with $40 million funding round | ReutersReuters · published March 12, 2026 · Tier B
  15. [15]Onyx Security Raises $113M Series B to Control Advanced AI, Quadrupling Revenue since Stealth Launch Four Months AgoBusiness Wire · published July 29, 2026 · Tier A

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