What Nautilus OT/IoT Cybersecurity does

Nautilus OT/IoT Cybersecurity (legal entity Atlantis Cybersecurity) is a Netherlands-headquartered private company founded in 2023 that provides passive monitoring cybersecurity for operational technology and IoT environments in European industrial networks. The company deploys virtualised or physical sensors on SPAN ports or network TAPs to analyse traffic without injecting packets or installing software on production equipment, identifying connected assets (PLCs, HMIs, sensors), recognising industrial protocols such as Siemens S7, Modbus, and OPC UA, and detecting malware, intrusions, and behavioural anomalies in real time. The platform includes AI-powered reporting that translates technical findings into board-ready financial risk assessments and integrates via open APIs with Microsoft Sentinel, ServiceNow CMDB, ERP, MES, DCIM, and other SIEM/CMDB platforms. Nautilus explicitly avoids US cloud providers to maintain EU data sovereignty and supports NIS2 and GDPR compliance requirements.

Nautilus serves European mid-market and enterprise customers across six verticals: manufacturing, horticulture, municipalities and governments, transportation and logistics, critical infrastructure, and digital infrastructure. The company employs 1-10 staff across offices in Haarlem (Netherlands) and Annecy Le Vieux (France), with leadership comprising CEO and co-founder Marc van Gent, CTO and co-founder Norbert van Adrichem, CCO Jeroen van Es, and Strategic Advisor Hans van Boggelen.

The company monetises through an asset-based monthly subscription tied to active OT assets detected, with the virtualised sensor appliance included at no extra cost, plus optional hardware sales, professional services, and leasing/CAPEX procurement for larger deployments. Go-to-market is hybrid — sales-led through demo requests and expert consultations, with product-led growth via free NIS2 compliance checks and OT visibility snapshots. Two seed rounds in September and October 2023 raised approximately $480K in total from YB Group and Atlantis Digital. No revenue, ARR, or customer logos are publicly disclosed.

Name

Nautilus OT/IoT Cybersecurity

Legal name

Atlantis Cybersecurity

Website

https://nautilus-ot.com

Company type

Private

Founded year

2023

Operating status

Operating

Headcount range

1–10 employees

Short description

Nautilus OT/IoT Cybersecurity is a Netherlands-based (Haarlem) private company founded in 2023 that provides passive OT/IoT network monitoring, threat detection, and AI-powered board reporting for European industrial customers across manufacturing, critical infrastructure, municipalities, logistics, horticulture, and digital infrastructure verticals.

Ownership category

akta.pro rank

Product category

OT/IoT Cybersecurity

NAICS

Security Systems Services (except Locksmiths) (561621)

SIC

Services-Prepackaged Software (7372)

akta.pro primary industry

OT Threat Detection & Monitoring (NDR/IDS for ICS) (HDADAJAF)

akta.pro secondary industries

Infrastructure & Network Monitoring (NPM/NPMD) (HDABAJAA), Network Access Control (NAC) (HDADABAJ)

Keywords

• OT cybersecurity platform
• IoT security monitoring
• Passive network monitoring
• Industrial asset visibility
• OT threat detection

Headquarters

HQ city

Haarlem

HQ country

Netherlands

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Software

Cost components

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

Revenue model

1. Subscription - Asset-Based: Monthly subscription model based on the number of active assets detected during each billing period. Customers pay only for what is in use. Virtualized sensor appliance included at no extra cost, with updates, support, and integrations covered.
2. Optional Hardware Sales: Optional one-time hardware purchase for high-performance sensor devices for organizations preferring physical over virtual sensors.
3. Professional Services: Optional deployment support services available through affordable support packs for organizations requiring assistance with implementation.
4. Leasing and CAPEX Options: Leasing and CAPEX options available for larger or long-term deployments, providing flexibility in procurement for enterprise customers.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels6 records

Core offering

Nautilus provides a passive cybersecurity monitoring platform designed specifically for operational technology (OT) and Internet of Things (IoT) environments. The platform delivers continuous asset visibility, vulnerability detection, and threat monitoring across industrial networks without deploying agents or performing active scans, making it suitable for live operational systems used by enterprises and municipalities.

Product overview

Nautilus OT is a unified OT and IoT cybersecurity platform designed for industrial networks. The core Nautilus OT Platform delivers real-time network traffic analysis through passive monitoring (zero packets injected, no process disruption), with capabilities spanning asset discovery, threat detection, risk assessment, and business reporting. The platform is offered via a transparent monthly subscription model based on active assets detected, with a virtualised sensor appliance included at no extra cost. Supplementary offerings include the Key Features Report (technical capabilities overview), Executive Report Key Features (board-ready strategic insight), and OT Visibility Snapshot (free assessment tool). The solution covers multiple industry verticals: Manufacturing, Horticulture, Municipalities & Governments, Transportation & Logistics, Critical Infrastructure, and Digital Infrastructure. All data processing occurs within the EU with no American cloud providers or Big Tech involvement, supporting GDPR and NIS2 compliance.

Differentiator

Problem solved

Functional benefit

Products and services

• Nautilus OT Platform

Quantifiable outcome

• Operational in under 2 hours from sensor to inventory
• +3 more outcomes

Segments7 records

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration8 records

AI capability5 records

Feature6 records

Partnerships

Two partnerships are on record, tiered core.

• Microsoft SentinelcoreTechnology or IntegrationIntegration partnership with Microsoft Sentinel for security information and event management. Nautilus pushes OT security data into Microsoft Sentinel through open APIs, enabling organizations to extend protection into the operational domain while maintaining their existing IT security infrastructure.
• ServiceNowcoreTechnology or IntegrationIntegration with ServiceNow CMDB platform. Nautilus pushes translated OT asset data into ServiceNow through open APIs, enabling complete asset truth in the CMDB with proper matching and de-duplication of IT and OT records.

Scale indicators13 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Claroty: A leading OT/IoT cybersecurity platform offering asset discovery, threat detection, and vulnerability management for industrial networks. Closely comparable to Nautilus in core functionality (passive monitoring, protocol coverage, SIEM/CMDB integrations) and target verticals, though Claroty is more enterprise-focused and globally scaled.
• Nozomi Networks: OT and IoT visibility and security vendor with passive network monitoring, threat detection, and asset intelligence. Directly comparable in technology approach and verticals served, with a broader global footprint and deeper enterprise reference base.
• Dragos: Specialist OT cybersecurity vendor focused on industrial control systems, providing asset discovery, threat detection, and incident response. Comparable in domain specialization and protocol coverage, with a stronger position in critical infrastructure and US public-sector markets.
• Armis: Asset visibility and security platform covering IT, OT, IoT, and medical devices with passive monitoring. Comparable in core technology and cross-vertical coverage, with a larger SaaS footprint and stronger presence in healthcare and enterprise segments.

Broad incumbents

• Tenable OT Security: Tenable's OT/IoT security product (originally Indegy) offering asset discovery, threat detection, and vulnerability management integrated with Tenable's broader exposure platform. Comparable in functionality but bundled into a much larger enterprise vulnerability management portfolio.
• Microsoft Defender for IoT: Microsoft's OT/IoT security offering (built on CyberX) integrated with Sentinel and the broader Microsoft security stack. Comparable in capability and integrations, but distributed as part of Microsoft's enterprise platform — and a direct competitor to Nautilus on the EU data sovereignty axis.
• Fortinet (OT Security): Fortinet extends its firewall and network security portfolio into OT environments via FortiGate and the FortiNDR/OT product line. Comparable as a competitor in the same buyer conversations, but as part of a much broader enterprise security portfolio rather than a pure-play OT vendor.
• Palo Alto Networks (OT Security): Palo Alto Networks addresses OT security through its firewalls, IoT Security service, and Prisma Cloud offerings. Comparable at the buyer level (CISO consolidation), but competing from a network-security incumbent position rather than a pure OT/IoT specialty.
• Cisco (Cyber Vision): Cisco's Cyber Vision product provides OT asset visibility and security natively on industrial network infrastructure. Comparable in protocol-level visibility, with distribution advantages through Cisco's installed base in industrial networking equipment.

Emerging players

• Mission Secure: Smaller specialist in OT/ICS cybersecurity offering managed detection and response and platform-based visibility for industrial control systems. Comparable in niche focus and customer profile, though at an earlier commercial stage and with a North American footprint.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/atlantis-cyber-security

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds2 records

Investors2 records

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 Nautilus OT/IoT Cybersecurity