Fundraising Fox

Tamnoon

Sammamish, US Β· Founded 2021 Β· Delaware corporation Β· 49 employees on LinkedIn Β· 10 known investors

Tamnoon offers an AI-assisted cloud security remediation service that triages, prioritizes, and fixes cloud misconfiguration alerts from CNAPP and cloud security tools. Its AI agent Tami, combined with human cloud security experts, groups findings into remediation initiatives and validates fixes in production to reduce alert backlogs and shorten mean time to remediation for security and engineering teams.

Also known as Tamnoon Inc.

Founders & leadership

Tamnoon was founded in 2021 by Marina Segal.

MSMarina Segal
Marina SegalinChief Executive Officer and Co-FounderCo-founder of Tamnoon, which provides an AI-assisted cloud security remediation service that triages and fixes cloud misconfiguration alerts. She previously worked on cloud security products at Dome9 (acquired by Check Point) and Sysdig, and earlier held roles at Deloitte and Credit Karma.

Board

ZAZohar Alon
Zohar Alonin𝕏Board MemberInvestor at YL Ventures
MCMarcos Castro Osorio
Marcos Castro OsorioinBoard MemberDirector, Cyber at Bright Pixel Capital
IPIdan Perez
Idan PerezinBoard director
SMShay Michel
Shay MichelinBoard Member and Seed InvestorManaging Partner at toDay Ventures

Investors Β· 10

Also in the syndicate Β· 2

Blu VenturesMindset Ventures

Reported raises Β· per SEC filings

Form D private placements

$17M disclosed across 2 of 3 rounds Β· 2023–2024

β–Ά$12.7MraisedOct 2024 Β· 13 investors Β· Other Technology
Rule 506(b)
Officers, directors & promoters on the filing
  • Marina SegalExecutive Officer, Director, Promoter
  • Zohar AlonDirector
  • Marcos Castro OsorioDirector
  • Idan PerezDirector
  • Shay MichelDirector
Offering amount
$12.7M
Amount sold
$12.7M
Minimum investment
$15K
First sale
Jul 2024
Incorporated
Corporation, Delaware, 2021
Federal exemptions
06b
Full filing on SEC EDGAR β†—
β–Ά$4.3MraisedJun 2023 Β· 22 investors Β· Other Technology
Rule 506(b)
Officers, directors & promoters on the filing
  • Marina SegalExecutive Officer, Director
  • Zohar AlonDirector
  • Idan PerezDirector
Offering amount
$5.1M
Amount sold
$4.3M
First sale
Jun 2023
Incorporated
Corporation, Delaware, 2021
Federal exemptions
06b
Full filing on SEC EDGAR β†—

Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.

Company profile

researched Aug 2026

Tamnoon operates a managed cloud security remediation platform that connects to a customer's existing detection stack β€” CNAPP, CSPM and cloud-native security tools β€” and takes findings through to verified fixes. The company positions its offering as closing the "last mile" of cloud remediation: alerts are aggregated in one place, enriched with environment context by Tami, Tamnoon's AI cloud SecOps agent, deduplicated across overlapping sources, and scored on two axes (alert risk and asset criticality) so that issues affecting business-critical assets, which the company calls "crown jewels," are surfaced first. Findings are then grouped into remediation initiatives and converted into engineering tasks containing CLI commands, infrastructure-as-code templates and validation scripts, delivered through tools customers already use such as Jira and ServiceNow.

The service is described as a hybrid of artificial intelligence and human intelligence: Tamnoon's "CloudPros" validate AI output, investigate root causes, and either hand off production-ready fixes to customer engineers or execute remediation themselves. Customers can choose a co-pilot mode, where AI investigates and proposes fixes subject to expert validation, or supervised autopilot, where Tamnoon experts execute changes on the customer's behalf. Each remediation is paired with a prevention plan using cloud-native guardrails so the same misconfiguration does not recur; a patent-pending capability, Tamnoon Prevent, is described as blocking non-secure configurations created in the cloud console before deployment. Adjacent offerings include Managed CDR (cloud detection and response), reporting and compliance, CNAPP migration support, and cloud vulnerability remediation.

The company's engagement model follows a structured 90-day program: integration in weeks 1-2, a business-context session to set protection priorities and KPIs, identification of critical infrastructure and prioritized initiatives, an exposure-reduction campaign, and execution through week 12, with customers asked to spend roughly 30 minutes per week reviewing and approving initiatives.

Founding story

Tamnoon was founded by Marina Segal (CEO), Idan Perez (CTO) and Zohar Alon (Chairman), all of whom were previously associated with Dome9 Security, which was acquired by Check Point in 2018; Israeli press reported a 2022 founding date. The name derives from the Hebrew word for octopus, chosen by the founders to evoke intelligence, problem-solving, adaptability and efficiency. The founders' stated premise is that neither fully automated nor purely human cloud remediation can handle the complexity of cloud security posture management, and that expert human knowledge is needed to extract value from modern detection tooling.

Business model

Tamnoon sells a managed service layered on top of customers' existing cloud security tooling rather than a replacement detection product, combining software (the Tami agent and remediation platform) with delivery by its own cloud security experts. The company states customers achieve results while investing about 10% of the resources traditional professional services would require, and that comparable outcomes would otherwise require hiring up to 10 times the cloud security headcount.

Publicly described as a managed offering with a "Plans" page and demo-led sales; specific pricing terms are not disclosed in the available material.

Traction

At the time of its September 2024 Series A, Tamnoon said it had more than doubled its customer base in the year since its seed round and served organizations across North America in insurance, entertainment, healthcare, retail and professional services, with roughly 20 employees split between Israel and the United States. Company marketing materials cite 6 million alerts resolved by Tami, 13,000 hours saved per week, 97% exposure reduction in 90 days, a 72% MTTR reduction, and 90% reduction in critical alerts within 90 days. Recognition includes RSAC Launch Pad 2024 finalist, the inaugural Wiz Integrations Partner Award (2025), and Customer Educator recognition in the WIN Partner Index 2025.

Latest developments

In May 2026 Tamnoon announced an expansion of its Tami engine into a skill-based orchestrator for automated fixes, positioning the company as a cloud security platform built for the "Frontier AI era." In January 2026 it was recognized as a Customer Educator in Wiz's inaugural WIN Partner Index 2025. It has also published a State of Cloud Remediation 2026 report and introduced a Tamnoon MCP for Cortex, agentic remediation skills tailored to customer environments, and a remediation confidence score.

β–ΈFull profile β€” market position, technology, go-to-market, geography, history, risks & controversies

Market position

Tamnoon describes itself as the first and only hybrid human-AI managed service purpose-built for cloud security remediation, and as a pioneer in managed cloud remediation, drawing an analogy to how MDR changed the SOC. It positions itself as complementary to rather than competitive with detection vendors, operating in the cloud security segment that Gartner expected to grow 24% in 2024 to $7 billion, per the company's Series A announcement.

Tamnoon's stated differentiators are the pairing of AI automation with human expert validation before changes reach production, accountability through to verified closure rather than stopping at recommendations or tickets, tool-agnostic operation across the customer's existing detection stack, prevention plans and guardrails attached to every remediation, and an AI agent trained on accumulated real-world remediation outcomes rather than a purely model-driven approach.

Technology

The core technology is Tami, an AI cloud SecOps agent trained on years of real-world remediation data spanning millions of alerts. Tami performs active investigation of cloud environments and alert metadata to determine attributes such as environment, encryption state, public exposure and organizational ownership; it deduplicates and aggregates overlapping findings from multiple detection sources, applies risk and asset-criticality scoring, and generates remediation plans with CLI commands, IaC templates and validation scripts. Additional components include agentic prioritization, agentic investigation, agentic remediation, RBAC integrations for asset-ownership mapping, a remediation confidence score, a Tamnoon MCP for Cortex, and a skills orchestrator introduced in 2026 that assembles automated fixes from skills built around the customer's environment. Tamnoon Prevent is a patent-pending capability for real-time prevention of insecure configurations at creation time.

Go-to-market

Go-to-market is partner- and content-led: Tamnoon integrates with and co-markets alongside major cloud security vendors, having served as a launch partner for Wiz Integrations and Wiz Defend and as a Check Point CloudGuard partner, and it maintains a partner program, blog, research reports (including a State of Cloud Remediation 2026 report), webinars, playbooks, case studies and an academy. Direct sales run through demo bookings.

Enterprise security and engineering teams that already run CNAPP/CSPM tooling and face large alert backlogs, including organizations in insurance, entertainment, healthcare, retail and professional services. Named or quoted customers include Warner Music Group, Neptune Technology and Zinnia. The company says it serves environments ranging from 5 to 5,000 cloud environments.

Geography

Press releases are datelined Seattle, Washington, with earlier releases from San Francisco; Israeli press reported roughly 20 employees split between Israel and the United States. Customers are described as spread across North America.

History

The company's public timeline begins with interviews and webinars featuring CEO Marina Segal in 2023 on CSPM maturity and cloud posture management. In June 2023 Tamnoon became a launch partner for Wiz Integrations (WIN). In September 2023 it raised $5.1 million in seed funding, led by Merlin Ventures and Secret Chord Ventures, and appointed Ran Nahmias as Chief Business Officer and Jonathan Lebowitsch as VP of Technical Services. In November 2023 it announced an integration with AWS Security Hub. In April 2024 it was named a finalist at RSA Conference Launch Pad. In September 2024 it announced a $12 million Series A led by Bright Pixel Capital, bringing total funding to over $18 million, and in December 2024 became a launch partner for Wiz Defend. In June 2025 it launched Managed CDR and a new AI cloud SecOps agent, and in July 2025 received the inaugural Wiz Integrations (WIN) Partner Award. In January 2026 it was recognized in the WIN Partner Index 2025 as a Customer Educator, and in May 2026 it expanded Tami into a skill-based remediation orchestrator.

Risks & controversies

Tamnoon's own materials note the inherent risk of applying automated changes to production cloud infrastructure without oversight, which can cause outages, and cite that only 9% of cloud misconfigurations are fixed in real time with automation; the service model depends on scarce cloud security expertise for its human validation layer. The company is small relative to the platform vendors it integrates with, and its distribution is closely tied to partnerships with those vendors, notably Wiz.

Compiled by commissioned research from 8 cited public sources β€” announcements, filings, and press listed under research sources below.

Key figures

latest reported
Alerts remediated per remediation initiative (average)Jan 2026145 alerts
Alerts resolved by TamiJan 20266,000,000 alerts
Critical cloud threat exposure reduction within first 90 daysSep 202490%
EmployeesSep 202420 people
Exposure reduction in 90 daysJan 202697%
Hours saved per weekJan 202613,000 hours/week
MTTR reductionJan 202672%
Reduction in effective risk exposureJan 202690%
Total disclosed fundingSep 2024$18M

Company-reported or press-reported figures, each dated to when it was claimed β€” not independently audited.

Competitors Β· 10

by search overlap
Sentinel One109 shared keywordsSentinelOne provides an AI-powered cybersecurity platform for enterprises that integrates endpoint protection, threat detection, and incident response capabilities. The company serves large enterprises, including many Fortune 500 organizations, to protect against cyber threats at scale.
Check Point Software101 shared keywordsCheck Point Software Technologies is a cybersecurity company providing security products and solutions. This page is its investor relations section, containing annual reports, SEC filings, financial results, and corporate governance information.
Palo Alto Networks99 shared keywordsPalo Alto Networks provides cybersecurity platforms and services to protect organizations' digital infrastructure across cloud, network, and security operations. The company serves enterprise organizations, governments, financial institutions, utilities, and healthcare providers globally.
Netezza97 shared keywordsIBM is a global technology company whose business spans enterprise software (including Red Hat, HashiCorp, and Confluent), IT infrastructure such as mainframes, servers, and storage, and IT consulting services. The company is also investing heavily in quantum computing and AI-based enterprise offerings, including its Lightwell open-source software security clearinghouse and the Anderon quantum wafer foundry.
Crowdstrike96 shared keywordsCrowdStrike provides an AI-native cybersecurity platform that unifies endpoint, identity, cloud, SaaS, and AI protection to detect and stop breaches for enterprise organizations. It combines automated response with human-led security operations including managed detection and response, threat hunting, and security services.
Wiz92 shared keywordsWiz provides cloud security platform that identifies and removes critical risks across multi-cloud environments. The company offers a unified security layer for organizations to manage risks and accelerate business operations on major cloud providers.
Splunk86 shared keywordsSplunk offers a unified platform for security and observability that ingests and analyzes large-scale data across hybrid cloud environments. Its tools support security operations centers with analytics and automated response, and help teams monitor application and infrastructure performance.
Orca Security64 shared keywordsOrca Security offers an agentless cloud security platform (CNAPP) that scans cloud accounts, code, containers, and AI workloads to detect, prioritize, and remediate risks from development through runtime. It serves enterprises, from Fortune 500 companies to cloud-native businesses, consolidating tools like SAST, SCA, and container security into a single platform.
Safe Security54 shared keywordsSAFE Security provides an AI-driven platform for cyber risk management, covering third-party risk management (TPRM), continuous threat exposure management (CTEM), AI security posture management (AI-SPM), and cyber risk quantification (CRQ). It uses an agentic workflow engine with native integrations to serve enterprise organizations, including a portion of the Fortune 500.
Trend Micro54 shared keywordsTrendAI (Trend Micro) provides enterprise cybersecurity through its TrendAI Vision One platform, which unifies endpoint, network, cloud, and identity security with XDR visibility, threat intelligence, and AI-focused threat protection. It serves enterprise customers across 185 countries, including hybrid cloud, virtualized data center, and modern SOC environments.

Companies competing with Tamnoon for the same Google search keywords, organic and paid, via search-intersection analysis.

Timeline Β· 12

launches, deals, and filings
Jul 2026
Introduction of Tamnoon MCP for Cortex

source β†—

May 2026
Tamnoon expands platform with skill-based remediation

Tamnoon expanded its Tami AI engine into a skill-based orchestrator delivering automated fixes drawn from millions of real cloud remediations.

source β†—

Jan 2026
Recognized as Customer Educator in the Wiz WIN Partner Index 2025

Tamnoon was named a Customer Educator in the inaugural WIN Partner Index 2025 published by Wiz.

source β†—

Jul 2025
Honored with inaugural Wiz Integrations (WIN) Partner Award

Wiz recognized Tamnoon with its first WIN Partner Award as the WIN ecosystem surpassed 200 integrations.

source β†—

Jun 2025
Launch of Managed CDR and new AI Cloud SecOps agent

Tamnoon launched Managed Cloud Detection and Response, built on AWS and launching with Wiz Defend, Amazon GuardDuty, CrowdStrike Falcon and Orca Security, alongside a new AI cloud SecOps agent.

source β†—

Dec 2024
Launch partner of Wiz Defend

Tamnoon announced its status as a launch partner for Wiz Defend, extending detection and response coverage for mutual customers.

source β†—

Sep 2024
Tamnoon raises $12M Series A led by Bright Pixel Capital

Series A round led by Bright Pixel Capital (formerly Sonae IM) with Blu Ventures, Mindset Ventures, Merlin Ventures, Secret Chord Ventures, Inner Loop Capital and Elron Ventures, bringing total funding to over $18 million.

$12M source β†—

Apr 2024
Named a finalist at RSA Conference Launch Pad 2024

Tamnoon was selected as a finalist at RSAC Launch Pad 2024 alongside Knostic and Culminate.

source β†—

Nov 2023
Integration with AWS Security Hub

Tamnoon announced an integration with AWS Security Hub covering prioritization through prevention.

source β†—

Sep 2023
Tamnoon raises $5.1M seed funding and appoints new executives

Tamnoon announced $5.1M in seed funding and appointed Ran Nahmias as Chief Business Officer and Jonathan Lebowitsch as Vice President of Technical Services.

$5.1M source β†—

Sep 2023
Ran Nahmias named Chief Business Officer; Jonathan Lebowitsch named VP of Technical Services

source β†—

Jun 2023
Launch partner for Wiz Integrations (WIN)

Tamnoon was selected as a launch partner for Wiz Integrations, bringing its proactive remediation capability into the WIN ecosystem.

source β†—

Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.

Legal entities Β· 1

corporate structure
TamnoonDelaware

In the news

β–ΈResearch sources Β· 8

primary sources listed

8 public sources were cited for this profile; the first-party ones are listed here.

Frequently asked questions

What does Tamnoon do?
Tamnoon provides a managed cloud security remediation service combining an AI agent, Tami, with human cloud security experts.
Who founded Tamnoon?
Tamnoon was founded by Marina Segal in 2021.
Who are Tamnoon's investors?
Tamnoon's investors include AlphaDrive, Bright Pixel Capital, Inner Loop Capital, Mindset Venture, toDay Ventures, Elron Ventures, Merlin Ventures, Secret Chord Ventures.
How much funding has Tamnoon raised?
Tamnoon has disclosed $17M raised across 2 of its 3 known rounds.
Where is Tamnoon headquartered?
Tamnoon is headquartered in Sammamish, US.