Nucleon Security
Nucleon Security is a Paris-based cybersecurity startup delivering an AI-powered Zero Trust platform for proactive, automated endpoint and enterprise defense. It serves over 100 clients across Europe and Africa via subscription and direct enterprise sales.
- Company typePrivate
- Founded2019
- HeadquartersParis, France
- Headcount11–50
- GTM typeB2B
- OfferingSoftware
What Nucleon Security does
Nucleon Security is a Paris-headquartered cybersecurity company, founded in 2019, that operates a dual France–Morocco structure and delivers endpoint and broader enterprise security through an AI-powered Zero Trust platform. The platform is built on agentic AI technologies combined with a Zero Trust architecture and is positioned to cover the entire cybersecurity defense cycle through proactive, automated threat detection and response. The company's product surface is described as a single integrated platform rather than a portfolio of point tools.
The firm sells primarily to enterprise and organizational buyers across Europe and Africa, with a stated footprint of more than 100 clients across three continents and named presence in France, Morocco, Tunisia, Benin, Togo, Côte d'Ivoire, and Madagascar. Its go-to-market is a direct enterprise field sales motion, and its revenue model is subscription-based recurring revenue, although specific pricing is not publicly disclosed.
As of September 2025, the company closed a late seed round of €3 million (~$3.5 million) led by NewFund Capital with participation from 212 Founders, AXIAN Investment, LoftyInc Capital, and Orange Ventures, earmarked for platform industrialization, R&D, and international expansion. Headcount sits in the 11–50 range, and the company remains private with no disclosed parent, no M&A history, and no named management team in the available data.
Nucleon Security firmographics
Firmographics- Name
- Nucleon Security
- Legal name
- Nucleon Security
- Website
- https://nucleon-security.com
- Company type
- Private
- Founded year
- 2019
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Nucleon Security is a Paris-based cybersecurity startup delivering an AI-powered Zero Trust platform for proactive, automated endpoint and enterprise defense. It serves over 100 clients across Europe and Africa via subscription and direct enterprise sales.
- Ownership category
- akta.pro rank
Where Nucleon Security is headquartered
LocationHeadquarters
- HQ city
- Paris
- HQ country
- France
- HQ region
- Europe
Offices2 records
Markets served
Nucleon Security business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Technology or R&D, Personnel, Marketing or Sales, Operations
Revenue model
- Cybersecurity Platform Subscription: Subscription-based cybersecurity platform providing proactive, automated solutions covering entire defense cycle
Go-to-market motion2 records
Distribution channels1 record
Marketing channels1 record
Nucleon Security product offering
Product offeringCore offering
Nucleon Security provides a unified AI-powered Zero Trust cybersecurity platform that delivers proactive, automated security solutions covering the entire defense cycle. The platform leverages agentic AI technologies combined with Zero Trust architecture to protect endpoints and enterprise environments. It serves over 100 clients across Europe and Africa with subscription-based access to its integrated platform.
Product overview
Nucleon Security offers a unified AI-powered Zero Trust cybersecurity platform that provides proactive, automated security solutions. The platform covers the entire cybersecurity defense cycle and is powered by agentic AI technologies. The company serves over 100 clients across three continents with this single integrated platform offering.
Differentiator
Problem solved
Functional benefit
Products and services
- AI-Powered Zero Trust Platform A comprehensive cybersecurity platform that leverages agentic AI and Zero Trust architecture to deliver proactive, automated security solutions covering the entire defense cycle for enterprises and organizations.
Quantifiable outcome
- Serving over 100 clients across three continents
Companies that use Nucleon Security
Customer profileSegments2 records
Ideal customer profiles1 record
Nucleon Security technology and API
TechnologyAPI detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature2 records
Nucleon Security partnerships and signals
Strategic signalScale indicators3 records
Recent moves5 records
Expansion highlights5 records
Nucleon Security competitors and assessment
Company assessmentDirect peers
- Cybereason: Cybereason delivers AI-powered endpoint detection and response with an emphasis on automated, full-cycle defense — closely aligned with Nucleon's automated defense-cycle narrative.
- Tehtris: French XDR/cybersecurity vendor offering AI-driven automated threat response for European enterprises — comparable stage, geography, and platform breadth to Nucleon.
- Zscaler: Zscaler is the category-defining Zero Trust Network Access (ZTNA/SASE) platform, the most direct architectural comparable to Nucleon's Zero Trust platform thesis.
- SentinelOne: SentinelOne offers an AI-driven endpoint protection (Singularity) platform with autonomous response, closely mirroring Nucleon's agentic AI + automated defense positioning.
- Sekoia.io: French cybersecurity platform providing SOC-grade threat detection and XDR with a unified defense-cycle approach — a close domestic comparable targeting European enterprises.
- Darktrace: Darktrace applies AI/ML to autonomously detect and respond to cyber threats across the full enterprise environment, directly paralleling Nucleon's agentic AI defense-cycle value proposition.
- CrowdStrike: CrowdStrike is the global endpoint security leader using AI-driven threat detection, directly comparable to Nucleon's AI-powered endpoint/Zero Trust platform for enterprise customers.
- Vade (Hornetsecurity): French-origin cybersecurity vendor (now part of Hornetsecurity) focused on AI-driven email and threat protection for European enterprises — comparable geography, AI emphasis, and SMB/enterprise mix.
Broad incumbents
- Okta: Okta is the established identity/Zero Trust access platform incumbent for enterprises — relevant peer because identity and access control are central to Nucleon's Zero Trust defense cycle.
- Palo Alto Networks: Global cybersecurity incumbent with a broad Zero Trust portfolio (Prisma, Cortex) that competes with Nucleon at the enterprise tier as a much larger, multi-product platform vendor.
Market position
Strengths4 records
Weaknesses5 records
Competitive moat3 records
Key risks5 records
Key highlights5 records
Customer concentration
Nucleon Security social profiles
Digital presenceNucleon Security financial estimates
Financial estimateRevenue estimate
Valuation estimate
Nucleon Security leadership team
Management profileNumber of profiles
Nucleon Security funding detail
Funding detailFunding overview
Funding rounds1 record
Investors5 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Nucleon Security M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Nucleon Security
What does Nucleon Security do?
Nucleon Security provides a unified AI-powered Zero Trust cybersecurity platform that delivers proactive, automated security solutions covering the entire defense cycle. The platform leverages agentic AI technologies combined with Zero Trust architecture to protect endpoints and enterprise environments. It serves over 100 clients across Europe and Africa with subscription-based access to its integrated platform.
Is Nucleon Security a public or private company?
Nucleon Security is a private company. It is classified as venture growth investor backed and is currently operating.
When was Nucleon Security founded?
Nucleon Security was founded in 2019. It employs 11 to 50 people.
Where is Nucleon Security based?
Nucleon Security is headquartered in Paris, France, in the Europe region.
How does Nucleon Security make money?
One revenue line is on record: cybersecurity Platform Subscription.
Who are Nucleon Security's main competitors?
Direct peers on record are Cybereason, Tehtris, Zscaler, SentinelOne, Sekoia.io, Darktrace, CrowdStrike and Vade (Hornetsecurity). Broad incumbents are Okta and Palo Alto Networks.
Does Nucleon Security have an API?
No public API is recorded for Nucleon Security.