Fundraising Fox

Rumble

Founded 2018 · 1 known investors

Find your way into Rumble

43 people in our graph share verified history with the Rumble 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 (formerly Rumble) is a cyber exposure management platform that provides asset discovery and fingerprinting across IT, OT, IoT, cloud, mobile, and remote environments without agents or credentials. It serves security teams at organizations with tools for network visibility, compliance reporting, and AI-assisted workflows.

AI & Machine LearningCybersecuritySaaS

Founders & leadership

Rumble was founded in 2018 by HD Moore.

HMHD Moore
HD Moorein𝕏Founder and CEOHe founded runZero in 2018 and has led it as CEO and, for a period, CTO. Earlier he served as VP of Research and Development at Atredis Partners, was a principal at Special Circumstances, LLC, and sat on the advisory boards of SecurityScorecard and Bugcrowd.

Investors · 1

StoneMill VenturesWashington · $100K – $1Mvia Michael · inferred

Funding

SEC filings, press & company announcements

Source: company announcements and press reports — follow each round's link for the claim.

In the news

Rebuild Rumble raises $6,000 for tornado reliefwbay.com · Aug 2026Rumble’s AI infrastructure pivot: $13.7 billion GPU deal and the path to profitability By Investing.cominvesting.com · Aug 2026Rumble (RUM) Stock Looks Strong On Sales Growth But Rich On Valuefinance.yahoo.com · Aug 2026Rumble Franchise Costs & Fees (2022 FDD)fddexchange.com · Aug 2026Rumble Raises $15M in Series A Funding - FinSMEsfinsmes.com · Mar 2022Rumble Raises $5m in VC Funding to Solve the Network and Asset Discovery Challengebusinesswire.com · Mar 2021

Frequently asked questions

What does Rumble do?
runZero (formerly Rumble) is a cyber exposure management platform that provides asset discovery and fingerprinting across IT, OT, IoT, cloud, mobile, and remote environments without agents or credentials. It serves security teams at organizations with tools for network visibility, compliance reporting, and AI-assisted workflows.
Who founded Rumble?
Rumble was founded by HD Moore in 2018.
Who are Rumble's investors?
Rumble's investors include StoneMill Ventures.