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runZero

Acquired

Founded 2018 · 84 employees on LinkedIn · 4 known investors

Find your way into runZero

36 people in our graph share verified history with the runZero team — schools, employers, funds. One of them is your warm intro.

Mattunlockedknows HD Moore · together at Bugcrowd (overlapped)
×6knows the team · via Security Scorecard
×4knows the team · via Bugcrowd
knows the team · via runZero

runZero provides an exposure management platform that discovers and fingerprints IT, OT, IoT, cloud, mobile, and remote assets without agents or credentials, giving security teams visibility into their attack surface. It serves security teams at organizations of various sizes, including a free Community Edition for small environments.

Also known as Rumble · Rumble Network Discovery

Founders & leadership

runZero was founded in 2018 by HD Moore.

HMHD Moore
HD MooreinHD Moore is founder and CEO of runZero, which provides an exposure management platform for discovering and fingerprinting IT, OT, IoT, cloud, mobile, and remote assets across organizations.

Investors · 4

Also in the syndicate · 2

Andrew PetersonAsh Devata

Company profile

researched Aug 2026

runZero offers a total attack surface and exposure management platform that combines active scanning, passive traffic sampling and API integrations to inventory managed and unmanaged assets across IT, OT, IoT, cloud, mobile and remote environments. The platform performs high-fidelity asset fingerprinting without requiring agents or credentials, and delivers attack surface visibility, exposure detection, risk prioritization, compliance reporting and KPIs. It can be consumed as a hosted SaaS service or run self-hosted on premises.

The product stack consists of one or more Consoles, lightweight Explorers deployed at network points-of-presence, and a command-line tool for offline data collection; it is managed through a web interface, an API, or the command line for self-hosted deployments. The live inventory covers assets, services, web-service screenshots, software, vulnerabilities and SSL/TLS certificates, with search query syntax, dashboards, findings, alerting and rules, analysis reports (including network maps, RFC 1918 coverage and external asset reports) and data export. Inbound integrations include AWS, Azure, Google Cloud, Microsoft Entra ID/Intune/Defender, CrowdStrike, SentinelOne, Tenable, Qualys, Rapid7, Wiz, Censys, Shodan, VMware and Dragos; outbound integrations include ServiceNow, Splunk, Jira, Sumo Logic, Tines and Thinkst Canary. Version 5.1 added AI workflows such as natural-language search, dashboard and report generation, autonomous discovery and AI-assisted custom integrations, plus a native Dragos integration for OT context.

Founding story

runZero was founded in 2018 by HD Moore, known as the creator of the open-source Metasploit Framework. Moore had spent roughly 25 years leading penetration testing teams and helping build three security products, and observed that organizations were repeatedly compromised through assets they did not know about and exposures their existing security stacks could not detect. He founded the company to address that visibility gap; the product and company were originally named Rumble.

Business model

runZero sells a commercial exposure management platform, offered as a hosted SaaS service or self-hosted deployment with managed licenses, alongside a free Community Edition intended for home use and environments with fewer than 100 assets. It also runs the Infinity Partner Program, a partner-first channel program with a partner directory and partner portal.

Licensed software platform with paid tiers and a free Community Edition; the company reported growth in annual recurring revenue (ARR) as a headline metric in 2022.

Traction

The company states it is trusted by hundreds of leading global organizations. At the time of its March 2022 Series A, runZero reported growing its user base 3x, its customer base 4x and its ARR 5x. Its platform underpins an exposure management program across 343 North Carolina Public School Units.

Latest developments

runZero 5.1 introduced AI workflows including natural language search, dashboard and report creation, autonomous discovery and AI-assisted custom integrations, together with a native Dragos integration providing OT context. The company announced that runZero is to join Dragos to create a combined security platform backed by a $4 billion Accenture investment. It continues to publish the runZero Hour research webcast series and analyst-cited material such as the GigaOm CxO Decision Brief and GigaOm Radar for Operational Technology Security.

Full profile — market position, technology, go-to-market, geography, history

Market position

runZero positions itself in exposure management, competing with agent-based and credentialed-scanning approaches that it argues leave blind spots. GigaOm's CxO Decision Brief covers runZero's coverage of converged IT, OT and IoT environments, and the GigaOm Radar for Operational Technology Security places runZero as a Challenger and Fast Mover in the Innovation/Platform Play quadrant.

runZero argues that agent-based tools only see the systems they are installed on and that credentialed scans fail when credentials change, leaving blind spots. Its combination of active scanning, always-on passive discovery and integrations, plus fingerprinting that requires no agents or credentials and is safe for sensitive OT and IoT networks, is presented as delivering broader and deeper asset coverage. A fully functional free Community Edition and an open-source heritage tied to Metasploit support a community-driven approach.

Technology

The platform combines a proprietary active scan engine covering a wide range of protocols and applications and described as safe for fragile OT and IoT environments, a passive traffic sampling engine that works with broadcast traffic, SPAN ports and encapsulated streams, and inbound/outbound API integrations. Advanced fingerprinting operates without agents or credentials; assets are correlated and merged across data sources. Customers can build custom integrations via a Custom Integration API and Starlark-based integration scripts, and the platform supports SSO (Okta, Microsoft Entra), high-availability and offline modes, a REST API, a CLI and Model Context Protocol support.

Go-to-market

Direct sales combined with a channel motion through the Infinity Partner Program and partner directory, supported by a free Community Edition as an entry point, a monthly research webcast series (runZero Hour), podcasts, blogs, case studies, analyst reports and in-person and virtual events.

Security and IT teams at organizations ranging from small environments and home users (Community Edition) to large global enterprises and public-sector bodies; named customers and case studies include North Carolina K-12 public school units, Topcon, Capgemini, Presidio and York University. Use cases span incident response, discovery of unmanaged and unknown assets, vulnerability management, M&A due diligence, and compliance/insurance requirements including CSRB, DORA, NIST CSF and 800-171, NIS2, NYDFS and PCI DSS.

Geography

Headquartered in Austin, Texas, with customers described as leading organizations around the globe.

History

Founded in 2018 by HD Moore under the name Rumble, the company later rebranded to runZero. It announced a $15 million Series A led by Decibel Partners in March 2022 from Austin, Texas, positioning itself then as a network discovery and asset inventory vendor. In 2025 it repositioned around exposure management with new platform capabilities, and its website announces that runZero is to join Dragos to form a combined security platform backed by a $4 billion Accenture investment.

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

Key figures

latest reported
ARR growthMar 20225x
Community Edition asset limitJan 2025100 assets
Customer base growthMar 20224x
North Carolina Public School Units coveredJan 2025343 school units
User base growthMar 20223x

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

Founder mafia

2 people who came through runZero went on to found or lead other companies.

Timeline · 4

launches, deals, and filings
Jan 2025
runZero to join Dragos

runZero announced on its website that it is to join Dragos, creating a combined security platform backed by a $4 billion Accenture investment.

source ↗

Jan 2025
Named a Challenger and Fast Mover in GigaOm Radar for Operational Technology Security

The GigaOm Radar for Operational Technology Security recognized runZero as a Challenger and Fast Mover in the Innovation/Platform Play quadrant.

source ↗

Jan 2025
runZero 5.1 released with AI workflows and native Dragos integration

runZero 5.1 added AI workflows including natural language searches, dashboard and report creation, autonomous discovery and AI-assisted custom integrations, plus a native Dragos integration bringing OT context into the platform.

source ↗

Mar 2022
runZero announces $15M Series A led by Decibel Partners

runZero, then describing itself as a leader in network discovery and asset inventory, announced a $15 million Series A round led by Decibel Partners with participation from new and existing investors, to accelerate go-to-market and engineering initiatives.

$15M source ↗

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

In the news

Research sources · 8

primary sources listed

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

Frequently asked questions

What does runZero do?
runZero is an exposure management platform that discovers and fingerprints IT, OT, IoT, cloud, mobile and remote assets without agents.
Who founded runZero?
runZero was founded by HD Moore in 2018.
Who are runZero's investors?
runZero's investors include Decibel Partners, Rain Capital.