Dark Reading is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them.Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

Perimeter

3/16/2021
10:00 AM
Connect Directly
Twitter
RSS
E-Mail
50%
50%

Metasploit Creator HD Moore's New Startup Raises $5M

Startup Rumble enters major new phase with venture capital investment led by Cisco-backed fund as well as big-name security entrepreneurs.

Famed security expert HD Moore's latest project — an IT and OT asset-discovery platform that attempts to address the-age-old challenge of finding and fingerprinting devices that reside on an organization's network and their status — just landed $5 million in venture capital funding from some major players in network and security technologies.

The VC round for Moore's Rumble startup was led by Cisco-backed Decibel Partners, via Jon Sakoda and Dan Nguyen-Huu. Other investors include security entrepreneurs Jon Oberheide, co-founder and CTO of Duo Security; Demisto (now part of Palo Alto Networks) founders Slavik Markovich and Rishi Bhargava; Phantom Cyber (now part of Splunk) founder and CEO Oliver Friedrichs; Thinkst Canary founder Haroon Meer; and StoneMill Ventures founder Michael Sutton.

Related Content:

10 Newsmakers Who Shaped Security in the Last Decade

Special Report: How IT Security Organizations Are Attacking the Cybersecurity Problem

New From The Edge: DDoS's Evolution Doesn't Require a Security Evolution

Moore says he built the Rumble Network Discovery tool after years of witnessing firsthand — as a penetration tester and creator of security tools such as Metasploit — that organizations can't properly find, track, and manage IT devices on their networks, nor the security posture of those devices. His years of research scanning for and discovering all types of exposed devices on the public Internet underscored that gap. 

While many security incidents often can be traced to poor visibility into devices on a network, IT asset discovery doesn't fit neatly into security compliance checklists.

That's something Moore admits has been a bit of a challenge in selling the Rumble tool. Since asset discovery isn't necessarily compliance-driven, there's often no budget for it, either, he says. "I love that we have been able to build a thriving business around something that doesn't have a compliance driver — by listening to our users," says Moore, who first launched his startup in the fall of 2019 with the software-as-a-service Rumble Network Discovery platform.

IT asset discovery technology is not new, however. There's the pervasive Nmap open source tool, as well as discovery products from vendors such as Armis, Claroty, Forescout, and Senrio, for example.

One limitation to discovery and mapping tools traditionally has been the need for credentials to access networked devices, so Moore took a different tack that uses network probes to find device MAC addresses and system details on rogue Remote Desktop Protocol (RDP) ports and misconfigured or outdated software on a forgotten system. "As long as it has an IP address, Rumble can track it," he says.

Hidden Weak Links
Sometimes the most painfully overlooked device on a network isn't what you'd expect: A security director at a global manufacturer says while running Rumble his firm found a previously unknown network bridge sitting on its network. He considers Rumble a security tool rather than an IT tool: "If you do not know what you have, how can you defend it?" says the manager, who asked that his company not be named.

Gerry Gosselin, CTO of Pixel Health, found a multifunction printer with its default password still in place when he first ran the discovery tool and began probing the device. "I realized the username was 'admin' and the password was 'admin,'" Gosselin recalls, even though his team previously had been tasked with changing all default passwords in the devices.

And while performing work for a potential client, Pixel Health's managed security service provider arm discovered a previously unknown private network that had been set up by a former employee of the client. "Rumble had already scanned that network and had full asset inventory on" it, Gosselin recalls, which solved a mystery about unidentified network assets that were deleted in a security incident.

To date, Moore says Rumble tracks some 2.6 million network assets and runs around 8,500 scans per day among around 4,100 organizations — 100 of which are on its paid plan and 4,000 on its free-tier service.  

HD Moore
Photo courtesy of HD Moore

HD Moore

Photo courtesy of HD Moore

2.0
The new 2.0 version of Rumble includes a self-hosted version that can be managed by an organization's cloud provider, and the platform now integrates with both IT operations management platform ServiceNow ITOM and Splunk's security information and event management product.

Among the other new features of 2.0: support for air-gapped networks and automated monitoring tasks, including sending alerts via email or collaboration platforms like Slack, and more APIs.

"The two things that I am most excited about in this release are the new rules engine that drives alerts and asset tagging based on search queries, events, and asset changes, and the new subnet discovery mode of the scan engine, which lets organizations identify all of their private IP space in a reasonable amount of time," Moore says.

The Rumble Network Discovery platform cannot, however, fully fingerprint mobile devices that come and go from the network. "It's mostly an on-prem scanner," notes Pixel Health's Gosselin. "I can't track my mobile devices" with it.

Moore notes that you can scan VPN subnets and remote wireless guest networks with Rumble, but it's not a full mapping. "As long as the devices are reachable by IP, we can generally do something, but the amount of information coming back may be limited," he says.

Meantime, Chris Kirsch, formerly of Veracode and Rapid7, has joined Rumble as co-founder and chief revenue officer, and Mathew Murphy as chief architect.

 

Kelly Jackson Higgins is the Executive Editor of Dark Reading. She is an award-winning veteran technology and business journalist with more than two decades of experience in reporting and editing for various publications, including Network Computing, Secure Enterprise ... View Full Bio
 

Recommended Reading:

Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
Edge-DRsplash-10-edge-articles
I Smell a RAT! New Cybersecurity Threats for the Crypto Industry
David Trepp, Partner, IT Assurance with accounting and advisory firm BPM LLP,  7/9/2021
News
Attacks on Kaseya Servers Led to Ransomware in Less Than 2 Hours
Robert Lemos, Contributing Writer,  7/7/2021
Commentary
It's in the Game (but It Shouldn't Be)
Tal Memran, Cybersecurity Expert, CYE,  7/9/2021
Register for Dark Reading Newsletters
White Papers
Video
Cartoon
Current Issue
How Enterprises are Attacking the Cybersecurity Problem
Concerns over supply chain vulnerabilities and attack visibility drove some significant changes in enterprise cybersecurity strategies over the past year. Dark Reading's 2021 Strategic Security Survey showed that many organizations are staying the course regarding the use of a mix of attack prevention and threat detection technologies and practices for dealing with cyber threats.
Flash Poll
How Enterprises are Developing Secure Applications
How Enterprises are Developing Secure Applications
Recent breaches of third-party apps are driving many organizations to think harder about the security of their off-the-shelf software as they continue to move left in secure software development practices.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2021-21746
PUBLISHED: 2021-10-20
ZTE MF971R product has reflective XSS vulnerability. An attacker could use the vulnerability to obtain cookie information.
CVE-2021-21747
PUBLISHED: 2021-10-20
ZTE MF971R product has reflective XSS vulnerability. An attacker could use the vulnerability to obtain cookie information.
CVE-2021-3542
PUBLISHED: 2021-10-20
** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: CVE-2021-42739. Reason: This candidate is a reservation duplicate of CVE-2021-42739. Notes: All CVE users should reference CVE-2021-42739 instead of this candidate. All references and descriptions in this candidate have been removed to preve...
CVE-2021-23452
PUBLISHED: 2021-10-20
This affects all versions of package x-assign. The global proto object can be polluted using the __proto__ object.
CVE-2021-25969
PUBLISHED: 2021-10-20
In “Camaleon CMS� application, versions 0.0.1 to 2.6.0 are vulnerable to stored XSS, that allows unprivileged application users to store malicious scripts in the comments section of the post. These scripts are executed in a victim’s browser w...