CISO Tribune

Vendor comparison · 2 companies

Stream.Security vs Zenity

Stream.Security sells an AI-First platform built to fight AI-enabled attacks. Zenity sells an AI agent security platform built to govern how agents behave, not just what they say or generate. CISO Tribune files both under AI model and agent 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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  • Stream.Security
  • Zenity
Stream.Security vs Zenity: Products, Customers and Funding Compared
Stream.SecurityStream.Security sells an AI-First platform built to fight AI-enabled attacks.stream.securityZenityZenity sells an AI agent security platform built to govern how agents behave, not just what they say or generate.zenity.io
What it sells
  • ProductionTwin[4]Computes the current state, structure and dependencies of a production estate as one connected system.
  • AI Observability[5]Builds a live inventory of every agent across an organization's environment and tracks the data those agents access.
  • AI Security Posture Management (AISPM)[7]Evaluates configuration, permissions, and integrations before an agent goes live.
  • Boundaries[4][6][8]Evaluates every agent action in real time against an organization's rules and decides to let it through, block it, or shut the agent down.
  • AI Detection and Response (AIDR)[9]AIDR reads the full sequence of an agent's activity, detecting threats mapped to the OWASP LLM and MITRE ATLAS frameworks.
  • Zenity Security Assessment Hub[13]A set of 10 free, open-source tools built by Zenity Labs to help security teams identify and understand immediate risks.
Categories
Headquarters
Tel Aviv, Israel[3]Not stated on its pages
Founded
Not stated on its pages2021[2]
Ownership and funding
Privately held[2][4]Privately held[3][6][17]
Named customers
Not stated on its pagesNot stated on its pages
Recent news
Not stated on its pages
  • September 23, 2026Zenity was named a Market Shaper in Gartner's inaugural Emerging Market Quadrant for AI Application Security.[15]
  • August 3, 2026Zenity announced a $125 million Series C round led by Norwest.[14]
  • June 17, 2026Zenity and Carahsoft announced a partnership under which Carahsoft serves as Zenity's Public Sector distributor.[17]
  • March 17, 2026Zenity announced general availability of runtime security controls for AI agents built on Microsoft Foundry.[16]
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
Not written yetZenity describes a global financial services firm and a global asset manager as organizations that write policy rules for agents. Zenity covers agents embedded in SaaS tools, home-grown agentic platforms in the cloud, and end-user devices. Zenity gives security and platform teams a single place to surface, enforce, and protect MCP usage.
Last verified
November 2, 2026November 9, 2026

Where they overlap

  • Stream.Security and Zenity are both filed under AI model and agent security.
  • Both are privately held.

Where they differ, field by field

  • Stream.Security's primary category is Cloud detection and response; Zenity's is AI model and agent security.
  • Zenity is also filed under AI governance.
  • Stream.Security lists ProductionTwin. Zenity lists AI Observability, AI Security Posture Management (AISPM), Boundaries, AI Detection and Response (AIDR) and Zenity Security Assessment Hub.
  • Stream.Security is headquartered in Tel Aviv, Israel.
  • Zenity was founded in 2021.

What it sells: Stream.Security

What ProductionTwin does[4]
ProductionTwin continuously computes the current state, structure and dependencies of cloud, SaaS, identity, runtime, AI, network, perimeter, on-prem and security controls as one connected system. Stream continuously models cloud environments as they change, unifying configurations, identities, behaviors, and activity.

What it sells: Zenity

What AI Observability does[5]
AI Observability is Zenity's discovery and visibility layer for AI agents. Data Lens surfaces sensitive files and pages that are both frequently accessed and broadly exposed across agents.
What AI Security Posture Management (AISPM) does[7]
AISPM evaluates configuration and permissions for agents embedded in platforms like Microsoft Copilot Studio, ChatGPT Enterprise, and Salesforce Agentforce. AISPM applies stricter enforcement in production and more flexible policy in development or sandbox environments.
What Boundaries does[4][6][8]
Boundaries is Zenity's runtime enforcement engine. A rule written once in Boundaries is enforced on Copilot, ChatGPT Enterprise, Agentforce, Bedrock, coding agents, and homegrown builds. Boundaries includes a built-in AI assistant that turns a plain-language request into a working rule.
What AI Detection and Response (AIDR) does[9]
AI Detection and Response (AIDR) is Zenity's runtime security layer for AI agents. AIDR detects direct and indirect prompt injection and blocks execution before the agent acts on them. AIDR breaks every agent interaction into individual steps and groups them by thread in a single activity table.
What Zenity Security Assessment Hub does[13]
The Zenity Security Assessment Hub is built by Zenity Labs. The tools take a Red-Team approach to visualize threats across Microsoft 365, with a focus on 365 Copilot, Copilot Studio, and Power Platform.

Questions about Stream.Security and Zenity

What do Stream.Security and Zenity sell?
Stream.Security sells ProductionTwin. Zenity sells AI Observability, AI Security Posture Management (AISPM), Boundaries, AI Detection and Response (AIDR) and Zenity Security Assessment Hub.
Are Stream.Security and Zenity in the same category?
They share AI model and agent security. Stream.Security's primary category is Cloud detection and response and Zenity's is AI model and agent security.
Where are Stream.Security and Zenity headquartered?
Stream.Security is headquartered in Tel Aviv, Israel.
When were Stream.Security and Zenity founded?
Zenity was founded in 2021.
Who owns Stream.Security and Zenity?
Stream.Security is privately held. Zenity is privately held.
Who are Stream.Security and Zenity sold to?
Zenity describes a global financial services firm and a global asset manager as organizations that write policy rules for agents.
What have Stream.Security and Zenity announced recently?
September 23, 2026: Zenity was named a Market Shaper in Gartner's inaugural Emerging Market Quadrant for AI Application Security.

About Stream.Security

Stream.Security sells an AI-First platform built to fight AI-enabled attacks. Stream finds the paths through production that are exploitable and closes them itself. Stream Security describes autonomous production defense as the ability to keep adapting as the environment and the attack change. Stream defends production for security teams at scale.[5][6]

ProductionTwin continuously computes the current state, structure and dependencies of cloud, SaaS, identity, runtime, AI, network, perimeter, on-prem and security controls as one connected system. Stream continuously models cloud environments as they change, unifying configurations, identities, behaviors, and activity. Stream models AWS, Azure, and GCP environments in real time. Cloud, SecOps, and IR teams operate from one shared view. Stream tightens access and permissions, enforces boundaries and guardrails, and corrects configuration. Stream simulates every remediation or response option and validates it in real time.[7]

Stream produces attack storylines from entry point to blast radius. Stream collects telemetry from cloud audit logs to application APIs with eBPF. Stream maps every event to its originating identity and enriches it with live asset context, risk, IP intelligence, IOC correlation, and MITRE ATT&CK mapping. Stream plants canaries on the paths an attacker is likeliest to take next and tunes its own detections over time. Stream detects agent-driven threats ranging from prompt injection attacks to full privilege escalation by correlating application, identity, and cloud activity within a single, unified timeline.

Stream follows one identity across the entire production estate. Stream correlates hunts across cloud, SaaS, identity, and on-prem as one system, not four consoles. Stream reconstructs workloads that lived for minutes after they are gone. Stream promotes whatever a hunt proves into a permanent detection or canary. Stream contains the attack and remediates the vulnerability. Stream computes the live blast radius and containment options, generating remediation flows before anything executes. Stream simulates every response option against production before it runs. Stream fixes at the least-impact point, which can be perimeter, identity, network, control, or workload. Stream recomputes the path after acting to verify closure.

Stream ingests cloud-native telemetry agentlessly across AWS, Azure, GCP, OCI, Kubernetes, and VMware. For runtime visibility, Stream offers an eBPF sensor that captures network, API, process, and file activity, or integrates with an existing CWP or EDR. Stream Security integrates with identity providers like Azure Entra. Stream Security delivers visibility into source control activity, correlating identity behaviors, configuration drift, and access misuse. Stream Security adds visibility into DBaaS activity, correlating behavior and access misuse. Stream.Security integrates with firewalls and WAFs, correlating security policies with real-time network reachability. Stream Security integrates with endpoint detection and response (EDR) tools. Stream Security integrates with vulnerability scanners to determine the criticality of alerts from the exploitability of assets. Stream enriches logs with threat intelligence sources for IOCs. Cloud logs can be offloaded to Stream Security while a SIEM receives only enriched events and high-confidence alerts. Stream Security provides ticketing integration that lets users open and assign tickets directly from the Stream Security UI. Stream Security provides SOAR platforms with insights into risky activities and enables automated responses.[1][5][8]

Stream.Security on the record

Sources

Stream.Security full record

  1. [1]stream.securityStream.Security · stream.security · undated page, accessed September 27, 2026 · Tier A
  2. [2]Streamsecurity secures 30 million in series b funding 302282527Stream.Security via PR Newswire · prnewswire.com · published October 22, 2024 · Tier A
  3. [3]5f4cdb781ecba4fee31d04a1LeadIQ · leadiq.com · undated page, accessed September 27, 2026 · Tier C
  4. [4]Stream Security | Autonomous Production DefenseStream Security · undated page, accessed November 10, 2026 · Tier A
  5. [5]Streamline Integration ProgramStream Security · undated page, accessed November 10, 2026 · Tier A
  6. [6]State of Autonomous Production Defense | Stream SecurityStream Security · undated page, accessed November 10, 2026 · Tier A
  7. [7]Go Beyond CNAPP with Real-Time Cloud SecurityStream Security · undated page, accessed November 10, 2026 · Tier A
  8. [8]CustomersStream Security · undated page, accessed November 10, 2026 · Tier A

Zenity full record

  1. [1]AI Agent Security and Governance | Zenity AI Security PlatformZenity · undated page, accessed September 27, 2026 · Tier A
  2. [2]Zenity announces strategic investment led by m12Zenity · zenity.io · undated page, accessed September 27, 2026 · Tier A
  3. [3]Zenity raises 38m series b funding round to secure agentic aiZenity · zenity.io · published October 29, 2024 · Tier A
  4. [4]AI Agent Security & Governance Platform for the Enterprise | ZenityZenity · undated page, accessed October 30, 2026 · Tier A
  5. [5]AI Observability | Zenity AI Security PlatformZenity · undated page, accessed November 10, 2026 · Tier A
  6. [6]AI Agent Security | Model Context Protocol (MCP) | ZenityZenity · undated page, accessed November 10, 2026 · Tier A
  7. [7]AI Security Posture Management | Zenity AI Security PlatformZenity · undated page, accessed November 10, 2026 · Tier A
  8. [8]Runtime Boundaries | Zenity AI Security PlatformZenity · undated page, accessed November 10, 2026 · Tier A
  9. [9]AI Detection and Response (AIDRZenity · undated page, accessed November 10, 2026 · Tier A
  10. [10]Agentic Identity & Access Management: Zenity AI Security PlatformZenity · undated page, accessed November 10, 2026 · Tier A
  11. [11]Securing Financial Services AI | Zenity, Microsoft & SlalomZenity · undated page, accessed November 10, 2026 · Tier A
  12. [12]Company | Zenity | Secure AI Agents EverywhereZenity · undated page, accessed November 10, 2026 · Tier A
  13. [13]Zenity Security Assessment Hub | Zenity | Secure AI Agents EverywhereZenity · undated page, accessed November 10, 2026 · Tier A
  14. [14]Zenity Raises $125 Million to Secure the Era of 1 Billion AI AgentsZenity · published August 3, 2026 · Tier A
  15. [15]Zenity Named a Market Shaper in Gartner’s Inaugural Emerging Market Quadrant for AI Application SecurityZenity · published September 23, 2026 · Tier A
  16. [16]Zenity Announces Availability of Inline Agent Runtime Security for Agents Built on Microsoft FoundryZenity · published March 17, 2026 · Tier A
  17. [17]Zenity and Carahsoft Bring AI Agent Security and Governance to Federal, State and Local AgenciesZenity · published June 17, 2026 · Tier A

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