What Assetnote does

Assetnote is an Australian cybersecurity company, founded in 2018 and headquartered in Brisbane, that provides a cloud-based External Attack Surface Management (EASM) platform for enterprise security teams. The platform continuously discovers, enriches, and monitors an organization's external digital assets on an hourly cadence, mapping cloud assets, technology stacks, services, and ephemeral assets from a single seed domain. Core platform modules include Continuous Asset Discovery, Deep Asset Enrichment, the Assetnote Exposure Engine (real-time exposure detection with proof-of-concept verification), Expert Security Research, Collaborative Workflows, and Customization.

The company's principal differentiator is its integrated offensive security research team, which discovers 0-Day vulnerabilities in widely used enterprise products (Zoom, Citrix, Metabase, cPanel, IBM Aspera, Progress WhatsUp Gold, Sitecore, Oracle Opera) and operationalizes findings directly into the platform. This research-led approach enables customers to receive verified exposure alerts with proof-of-concept for every finding and to remediate vulnerabilities before vendor patches are released. Assetnote also maintains Assetnote Labs, an open-source initiative distributing Commonspeak2, Kiterunner, and Assetnote Wordlists to the security community.

Assetnote operates a quote-based enterprise SaaS subscription model, selling exclusively through direct enterprise sales with "Request a Demo" CTAs and targeting CISOs and security leaders. Named customers include LinkTree, Yuga, Immutable, an unnamed Fortune 500 technology company, and Network Appliances. In January 2025, Assetnote was acquired by Searchlight Cyber, with backing from Eterna Growth Partners and subsequent investment from Charlesbank Capital Partners; co-founder Michael Gianarakis was appointed CEO of Searchlight Cyber in February 2026.

Name

Assetnote

Legal name

Assetnote Pty Ltd

Website

https://assetnote.io

Company type

Private

Founded year

2018

Operating status

Acquired

Headcount range

11–50 employees

Short description

Assetnote is an Australian cybersecurity company providing a cloud-based External Attack Surface Management platform that continuously discovers and monitors enterprise digital assets hourly. It serves enterprise CISOs and security teams with integrated offensive security research, enabling vulnerability detection before vendor disclosures.

Ownership category

akta.pro rank

Product category

Cybersecurity Software

NAICS

Security Systems Services (except Locksmiths) (561621)

akta.pro primary industry

Attack Surface Management (EASM/CAASM) (HDADAHAC)

Keywords

• Attack surface management
• External asset discovery
• Exposure monitoring
• Vulnerability detection
• Offensive security research

Headquarters

HQ city

Brisbane

HQ country

Australia

HQ region

Oceania

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

Personnel, Technology or R&D, Infrastructure, Marketing or Sales, Operations

Revenue model

1. ASM Platform Subscription: Enterprise SaaS subscription model for Attack Surface Management platform access. Pricing is quote-based and not publicly disclosed, indicating a direct sales motion with enterprise contracts. The platform is offered as a continuous service with features including asset discovery, enrichment, and exposure monitoring.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels7 records

Core offering

Assetnote provides a cloud-based External Attack Surface Management (EASM) platform that continuously discovers, enriches, and monitors an organization's external digital assets. The platform combines automated reconnaissance, hourly scanning, deep technology fingerprinting, and proprietary offensive security research to identify verified exploitable exposures with proof-of-concept before attackers can leverage them.

Product overview

Assetnote offers a unified External Attack Surface Management (ASM) platform that combines continuous asset discovery, deep asset enrichment, real-time exposure detection, and expert security research into a single product. The core Assetnote ASM Platform includes platform modules for Continuous Asset Discovery, Deep Asset Enrichment, the Assetnote Exposure Engine, Expert Security Research, Collaborative Workflows, and Customization. The platform scans assets every hour and provides proof-of-concept verification for every finding. Beyond the commercial platform, Assetnote maintains Assetnote Labs as an open-source research initiative offering tools like Commonspeak2 (evolutionary wordlists), Kiterunner (contextual content discovery), and shared wordlists. Additionally, ASM Roles is a specialized job board for Attack Surface Management professionals.

Differentiator

Problem solved

Functional benefit

Brands

• Assetnote Exposure Engine: Advanced exposure detection platform that provides high signal, real-time and continuous security monitoring of assets
• Assetnote Labs
• ASM Roles

Products and services

• Assetnote External Attack Surface Management Platform

Quantifiable outcome

• Customers patch vulnerabilities months before vendor disclosures or CVE advisories are released
• +2 more outcomes

Named customers5 records

Segments3 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Scale indicators3 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• CyCognito: CyCognito is a direct EASM competitor offering continuous external attack surface discovery and risk prioritization for enterprise security teams, overlapping directly with Assetnote's core platform on discovery, asset enrichment, and exposure monitoring use cases.
• Censys: Censys operates an internet-wide scanning and attack surface management platform with continuous asset discovery and risk evaluation, serving the same CISO/Security-Team buyer as Assetnote with a data-set-led approach to ASM.
• Shodan: Shodan provides internet-wide asset intelligence and a paid Shodan Monitor service for EASM, competing with Assetnote on continuous asset discovery and exposure monitoring for technical buyers.

Broad incumbents

• Tenable (Tenable Attack Surface Management): Tenable bundles exposure management (Tenable.asm, Tenable One, Nessus) for enterprise customers and competes head-on in the EASM category with the advantage of a much larger incumbent platform and broader vulnerability management portfolio.
• CrowdStrike (Falcon Surface): CrowdStrike Falcon Surface delivers EASM capability as part of the broader Falcon platform, leveraging its endpoint and SIEM installed base to compete with Assetnote on enterprise attack surface visibility.
• Microsoft Defender External Attack Surface Management: Microsoft's EASM service, integrated into the Defender and Azure security portfolio, competes with Assetnote especially among Microsoft-heavy enterprise customers where bundle economics favor Microsoft.
• Wiz: Wiz started in cloud security posture management and has expanded into external attack surface and exposure management, competing with Assetnote for the cloud-first enterprise CISO buyer.
• Bitsight: Bitsight is an established security ratings and external attack surface player with continuous monitoring capabilities overlapping Assetnote's enterprise customer base and platform scope.
• RiskRecon (Mastercard): RiskRecon, now part of Mastercard, delivers continuous external attack surface monitoring and cyber risk ratings for enterprises, competing with Assetnote in third-party and M&A use cases.

Emerging players

• Axonius: Axonius is a cyber asset attack surface management (CAASM) and SaaS security platform that overlaps with Assetnote's asset-centric discovery and enrichment capabilities, targeting overlapping enterprise security buyer personas.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/assetnote
• GitHubgithub.com/assetnote
• LinkedInlinkedin.com/company/assetnote

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Assetnote