Tenable Shells Out $45 Million to Acquire Bit Discovery


Tenable on Tuesday announced plans to spend $45 million in cash to acquire Bit Discovery, an attack surface management software startup created by cybersecurity pioneers Jeremiah Grossman and Robert Hansen.

The acquisition comes less than a year after Bit Discovery raised $4 million in Series B funding to build technology to help organizations track and manage risks to digital assets.

Once the deal closes, Columbia, Maryland-based Tenable plans to leverage Bit Discovery’s products across its entire portfolio – from enterprise vulnerability management (VM) to Nessus, from cloud to operational technology (OT) to identity. 

“Once integrated, customers will have the ability to assess the security posture of their entire attack surface and understand each of these in the context of an attack path which might exist from external systems to critical assets,” the company said in a note announcing the transaction.

[ READ: Bit Discovery Banks $4 Million for Attack Surface Management  ]

“By covering both external and internal assets, Tenable will provide a comprehensive view of vulnerabilities and cyber risk, allowing customers to prioritize remediation efforts and minimize cyber exposure,” Tenable added.

Bit Discovery raised a total of $6.6 million to build and sell an attack surface management tool to help security programs to identify and manage Internet-connected assets.

Attack surface management is a new product category meant to address gaps in point-in-time penetration testing and vulnerability management.  It has emerged as a highly competitive category with multiple startups jostling for market share.

Well-funded players in the attack surface management space include Bishop Fox, Intrigue, Randori and CyCognito.

The Bit Discovery  product automates the scanning of Internet-connected assets on a continuous basis, flagging security problems to alert security teams in  real-time whenever a portfolio changes.  

The acquisition is expected to close later in the second quarter of 2022

Related: WhatHat’s Jeremiah Grossman Leaving Security Firm

Related: WhiteHat Founder Jeremiah Grossman Joins SentinelOne 

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Ryan Naraine is Editor-at-Large at SecurityWeek and host of the popular Security Conversations podcast series. He is a journalist and cybersecurity strategist with more than 20 years experience covering IT security and technology trends.
Ryan has built security engagement programs at major global brands, including Intel Corp., Bishop Fox and Kaspersky GReAT. He is a co-founder of Threatpost and the global SAS conference series. Ryan’s career as a journalist includes bylines at major technology publications including Ziff Davis eWEEK, CBS Interactive’s ZDNet, PCMag and PC World.
Ryan is a director of the Security Tinkerers non-profit, and a regular speaker at security conferences around the world.
Follow Ryan on Twitter @ryanaraine.

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