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AlienVault

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At AlienVault our mission is to enable all organizations to detect and respond to today's threats in cloud, on-premises and hybrid cloud environments

San Mateo, United StatesFounded 2007Cybersecurity
Valuation $500M–1B Last recorded · 2018
Headcount <100 Current team size
Total funding $100–500M Disclosed equity funding
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About AlienVault

AlienVault, established in 2007, operates as a key entity within the cybersecurity sector, now under the umbrella of AT&T Cybersecurity following its acquisition in 2018. The company was founded in Madrid, Spain, by Julio Casal, Dominique Karg, Alberto Román Linacero, and Ignacio Molleda Carmona. Casal's journey began in the 1990s as a CISO for several ISPs, where he formed Spain's first white-hat penetration testing team and ran an MSSP. This deep experience in network security and threat management directly led to the creation of AlienVault and its foundational open-source project, OSSIM.

The company's core mission is to democratize threat detection and response, making robust security accessible and affordable for organizations of all sizes, particularly small to medium-sized businesses. AlienVault's business model is centered on a subscription-based framework for its Unified Security Management (USM) platform. This model provides a recurring revenue stream, supplemented by professional services like implementation and training. Initially a services-based company, AlienVault strategically pivoted to a product-based model, relocated its headquarters to San Mateo, California, to tap into the US market, and later shifted to a cloud-based subscription revenue model to better serve the mid-market.

AlienVault's flagship offering is the Unified Security Management (USM) platform, which integrates multiple essential security functions into a single solution. This platform, available as USM Anywhere (cloud-based SaaS) and USM Appliance (on-premises), provides asset discovery, vulnerability assessment, intrusion detection (network and host), behavioral monitoring, and SIEM capabilities. A key differentiator is the integration of the Open Threat Exchange (OTX), the world's largest crowd-sourced threat intelligence community. OTX allows tens of thousands of security professionals globally to share threat data collaboratively, which then feeds directly into the USM platform, providing real-time, actionable intelligence. This combination of unified tools and community-powered threat intelligence simplifies complex security operations, enabling resource-constrained IT teams to detect and respond to threats like malware, ransomware, and phishing attacks effectively.

A significant milestone in the company's history was its acquisition by AT&T in July 2018. This event integrated AlienVault's technology into AT&T's extensive cybersecurity portfolio, creating a new division led by then-AlienVault CEO, Barmak Meftah. The acquisition was designed to accelerate the delivery of enterprise-grade security solutions to small and medium-sized businesses by combining AlienVault's platform with AT&T's managed security services and network visibility.

Source: Dealroom company data

At a glance

Status
Acquired
Founded
2007
Headquarters
San Mateo, United States
Employees
53
Open positions
None listed
Dealroom signal
65.9/100
Industry
Security
Sub-industry
Cloud & Infrastructure
Sector
Testing, Vulnerability Management, Verification, Open Source, Cloud Computing, Network Security, User Behavior, Intrusion Detection, Cybersecurity, Horizon Europe
Business model
SaaS
Client focus
b2b

Funding history

10 recorded events

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
ACQUISITIONOther financing Aug 2018 $550M $550M AT&T ↗
SECONDARYOther financing Jun 2016 $0 — Founders Circle Capital —
Showing the latest 2 of 10 recorded eventsBook a demo for the full funding history →

Growth signals

AlienVault website traffic

Latest recorded traffic for AlienVault is 250K monthly website visits, down 3.8% over the last three months. AlienVault's team grew 0% over the past year.

Latest monthly visits250K 3-month web change-3.8% 1-year team growth0%
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Similar companies

Closest operating peers by Dealroom taxonomy

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Investments and acquisitions

Capital deployed

Recent portfolio relationships for companies that also act as investors or acquirers.

Investors

9 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Seed1 investor entered at this stage

  • Eureka

Series A2 investors entered at this stage

  • Neotec Capital Riesgo
  • Adara Ventures

Series B and later5 investors entered at this stage

Other known investors1 additional known investor

  • AT&T
Team profiled 46 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 3 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Global footprint

Workforce and web traffic by country
Workforce by country
🇺🇸 United States · San Mateo HQ
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Market sentiment

Posts on X, past 7 days

An AI-synthesised read of the highest-engagement posts about AlienVault on X, ranked by likes and reposts, corporate channels excluded.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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