To protect a company’s network, you need to have an understanding of which devices are connected to the network. HD Moore, a network security expert known for founding the Metasploit Project, found that the existing tools used for network discovery and asset inventory were outdated.
In 2018, he developed Rumble, a modern tool that allows companies to find and inventory all of the devices in their network — including those connected physically and in the cloud — without requiring credentials, agents or access to SPAN ports.
On Monday, the Austin-based startup announced that it raised $15 million in Series A funding. The announcement comes one year after the startup raised $5 million in seed funding.
“Most IT and security teams are still struggling to create a useful inventory from their existing security tools. This data is often incomplete and unreliable because these tools tend to focus on risk and not asset identification,” Moore said in a statement. “Our focus is on building an amazing network discovery and asset inventory platform that provides high-quality data through an intuitive user interface.”
Moore stepped down as Rumble’s CEO last year to focus on product development as CTO. Co-founder Chris Kirsch, who joined Rumble at the beginning of 2021, left his position as CRO to take over as CEO.
Both the Series A and seed funding rounds were led by Decibel Partners and joined by several information security founders and executives. Rumble will use the latest infusion of capital to hire across its go-to-market and engineering teams.
Rumble has seen exponential growth in the past year. Last year, the company tripled its user base, quadrupled its customer base and saw a fivefold increase in its annual recurring revenue. More than 11,000 users have the Rumble Starter Edition, which is free for networks with less than 256 assets.
“Even though network discovery and asset inventory is a critical requirement for many IT and security programs, most organizations still don’t have complete visibility into the networks they use, much less every device and software application connected to them,” Jon Sakoda, a founding partner at Decibel Partners, said in a statement. “Rumble is solving that problem, and they’re seeing a tremendous response from their customers who are finally getting the visibility they need to secure and protect their cloud and on-prem environments.”
