Cylus
Cylus provides CylusOne, a rail-specific cybersecurity platform that protects operational technology across onboard trains, signaling infrastructure, stations, depots, and control centers for rail operators, OEMs, and infrastructure integrators worldwide.
- Company typePrivate
- Founded2017
- HeadquartersTel Aviv, Israel
- Headcount51–100
- GTM typeB2B
- OfferingSoftware
What Cylus does
Cylus is a rail cybersecurity company founded in 2017 and headquartered in Tel Aviv, Israel, that builds CylusOne, a unified cybersecurity platform purpose-built for railway and metro operators. The platform is rail-specific rather than a generalist OT/IT security tool: it provides deep protocol-level visibility (DPI) across both legacy signaling and modern CBTC systems, and it monitors and protects the full rail stack including onboard train systems, wayside signaling infrastructure, stations, depots, and central control centers. CylusOne deploys non-intrusively via passive sensors to avoid disrupting safety-critical operations, supports cloud, on-premises, and hybrid deployment modes, and integrates with existing SIEM/SOC environments through partnerships with Fortinet and AWS. Detection is behavior-based, using baseline modeling of rail OT traffic to identify anomalies and threats specific to rail operations.
The company serves rail operators, rail OEMs, and rail infrastructure integrators, with named relationships including Alstom (a strategic investor and OEM partner), HaslerRail (rail telecom), Belden (rail networking), Egis (rail engineering, India Center of Excellence partner), and operator customers across Europe, North America, APAC, and the Middle East including Israel Railways and the NTA. The platform holds IEC 62443-4-1 process certification and was the first rail cybersecurity solution to achieve IEC 62443-4-2 SL 3 certification, a gating requirement in many rail procurement processes.
Cylus operates an enterprise B2B business model, selling platform licenses with associated professional services to rail operators and OEMs through direct sales and channel partners. Sales cycles are long given the regulated, safety-critical nature of rail procurement. The company has raised approximately $57 million cumulatively across multiple rounds from 2018 to 2021, including a strategic investment from Alstom and a $30 million Series B led by Ibex Investors in December 2021. Headcount is in the 51-100 range, and operations span Israel, Europe, North America, APAC (via the India CoE), and the Middle East.
Cylus firmographics
Firmographics- Name
- Cylus
- Legal name
- Cylus Cyber Security Ltd.
- Website
- https://cylus.com
- Company type
- Private
- Founded year
- 2017
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- Cylus provides CylusOne, a rail-specific cybersecurity platform that protects operational technology across onboard trains, signaling infrastructure, stations, depots, and control centers for rail operators, OEMs, and infrastructure integrators worldwide.
- Ownership category
- akta.pro rank
Cylus industry classification
Industry- Product category
- Rail OT Cybersecurity Software
- akta.pro primary industry
- Cybersecurity & Safety Assurance for Rail Control Centers (SOC/OT Security, Safety Cases) (TLAJAEAM)
- akta.pro secondary industry
- Security Systems Monitoring & Dispatch (SOC/Remote Guarding) (IMAIAEAF)
Keywords
Where Cylus is headquartered
LocationHeadquarters
- HQ city
- Tel Aviv
- HQ country
- Israel
- HQ region
- Middle East
Offices1 record
Markets served
Cylus business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Technology or R&D, Personnel, Marketing or Sales, Operations, Infrastructure
Revenue model
- CylusOne Platform Subscription: B2B SaaS subscription model for CylusOne cybersecurity platform licensed to rail operators. Platform includes asset visibility, vulnerability management, threat detection and response, and compliance modules.
- Professional Services: Implementation, integration, and consulting services likely offered alongside platform deployment, including Rail SOC building and vulnerability assessment services.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Annual | Enterprise quote-based pricing |
Go-to-market motion1 record
Distribution channels3 records
Marketing channels8 records
Cylus product offering
Product offeringCore offering
Cylus sells CylusOne, a unified rail-specific cybersecurity platform that continuously monitors, detects, and protects every layer of rail operational technology — including infrastructure, rolling stock, control centers, and stations. The platform delivers asset visibility, vulnerability management, threat detection and response, and compliance capabilities across rail-specific systems (CBTC, ERTMS, PTC, interlocking, rolling stock, power supply, CCTV, and station BMS). It is sold as a SaaS subscription to rail operators, complemented by professional services for deployment, Rail SOC building, and vulnerability assessments.
Product overview
Cylus offers CylusOne as its core unified cybersecurity platform purpose-built for railway operators. The platform provides comprehensive monitoring, detection, and protection across all rail operational technology layers including infrastructure, rolling stock, control centers, and stations. CylusOne is delivered as a modular solution with specialized security modules for specific rail systems including CBTC (Communications-Based Train Control), ERTMS (European Rail Traffic Management System), PTC (Positive Train Control), computer-based interlocking, rolling stock, power supply systems, CCTV, and station building management systems. The platform operates passively without interfering with rail operations and supports vendor-agnostic monitoring across heterogeneous rail environments.
Differentiator
Problem solved
Functional benefit
Brands
- CylusOne: Unified cybersecurity platform for rail operations that monitors, detects, and protects rail OT including infrastructure, rolling stock, control centers, and stations.
Products and services
- CylusOne CylusOne is a unified cybersecurity platform purpose-built for railway companies that continuously monitors, detects, and protects every layer of rail OT including infrastructure, rolling stock, control centers, and stations. The platform provides asset visibility, vulnerability management, threat detection and response, and compliance capabilities through a single operational view, with specialized modules for CBTC, ERTMS, PTC, computer-based interlocking, rolling stock, power supply, CCTV, and station building management systems. It is sold as a subscription to rail operators and infrastructure managers.
- Rail Cybersecurity Professional Services Implementation, integration, and consulting services offered alongside CylusOne platform deployment, including Rail Security Operations Center (SOC) building and vulnerability assessment services for rail operators.
Quantifiable outcome
- First rail cybersecurity solution certified to IEC 62443-4-2 at Security Level 3 (SL 3)
- +1 more outcomes
Companies that use Cylus
Customer profileNamed customers4 records
Segments4 records
Ideal customer profiles3 records
Cylus technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration4 records
AI capability3 records
Feature8 records
Cylus partnerships and signals
Strategic signalPartnerships
Six partnerships are on record, tiered core.
- HaslerRail (September 2022)coreAnnounced collaboration on railway cybersecurity solution with HaslerRail.
- Belden (September 2022)coreAnnounced partnership to provide cybersecurity platform for rail operators with Belden.
- EgiscorePartnership with Egis to launch a Center of Excellence for Rail Cybersecurity Services in India. Joint initiative to provide comprehensive rail cybersecurity services in the Indian market.
- AlstomcoreStrategic partnership with Alstom for railway cybersecurity. Alstom, a leading rail solutions provider, partnered with Cylus to create a leader in railway cybersecurity. Cylus provides cybersecurity expertise while Alstom contributes rail domain knowledge and market access. Cooperation includes increasing resilience of the Tel Aviv Red Line.
- HaslerRailcorePartnership with HaslerRail to ensure safety and security of rail by providing a comprehensive solution to key cybersecurity challenges within the ERTMS system facing train operators. Dr. Diego Politano, Managing Director of HaslerRail, leads the 'Protecting Rail Together' initiative.
- BeldencoreCollaboration with Belden to provide world-leading rail-specific threat detection and visibility solutions. CylusOne is adapted to maximize interoperability with Belden's Next-Generation Firewall (NGFW) products for industrial automation.
Scale indicators1 record
Recent moves6 records
Expansion highlights6 records
Cylus competitors and assessment
Company assessmentDirect peers
- Cervello: Israel-based rail cybersecurity specialist offering OT visibility and threat detection for mainline, metro, and freight rail. Closest direct competitor given similar rail-only focus, DPI on rail protocols, and overlapping target buyer profile of rail operators and infrastructure managers.
- Radiflow: OT cybersecurity vendor historically strong in rail and transit (metros, ERTMS-adjacent deployments). Closely comparable in targeting rail operators with protocol-aware monitoring and ICS/SCADA threat detection.
Broad incumbents
- Claroty: Large OT/IoT cybersecurity platform with explicit rail vertical coverage and protocol support. Competes with Cylus in rail-cyber deals but addresses a much broader set of verticals (manufacturing, energy, healthcare) with a larger sales force and more recent large funding rounds.
- Nozomi Networks: OT and IoT visibility and security vendor with rail deployments and protocol support. Overlaps with CylusOne in asset visibility and anomaly detection for industrial control systems, with a much broader vertical footprint.
- Dragos: ICS/OT cybersecurity platform with threat detection for industrial environments including rail-relevant protocols. Competes in OT SOC build-outs and asset visibility while addressing electric, water, oil & gas, and manufacturing verticals.
- Cybereason: Endpoint and extended detection and response vendor with OT/ICS offerings that can serve rail operators. Competes indirectly through broader security operations platform consolidations rather than rail-specialized depth.
- Cisco (Cyber Vision): Cisco's Cyber Vision offers OT visibility integrated with industrial networking switches and is deployed in rail and transit environments. Competes with CylusOne for asset visibility and segmentation in greenfield rail network projects.
- Honeywell Forge Cybersecurity: Industrial cybersecurity suite from Honeywell covering OT asset discovery, threat detection, and compliance. Targets rail and other process industries with bundled offerings tied to Honeywell's installed control-system base.
- Siemens: Major rail OEM and signaling vendor with its own cybersecurity portfolio for ERTMS, CBTC, and rail automation. Competes both at the OEM rail-system level and through Siemens-managed security services for operators.
Emerging players
- Waterfall Security Solutions: OT security vendor focused on unidirectional security gateways and safe IT/OT integration for critical infrastructure including rail and transit. Adjacent competitor where operators choose data-diode architectures alongside or instead of monitoring platforms.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat7 records
Key risks6 records
Key highlights6 records
Customer concentration
Cylus social profiles
Digital presenceCylus financial estimates
Financial estimateRevenue estimate
Valuation estimate
Cylus leadership team
Management profileNumber of profiles
Profiles6 records
Cylus funding detail
Funding detailFunding overview
Funding rounds4 records
Investors12 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Cylus 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 Cylus
What does Cylus do?
Cylus sells CylusOne, a unified rail-specific cybersecurity platform that continuously monitors, detects, and protects every layer of rail operational technology — including infrastructure, rolling stock, control centers, and stations. The platform delivers asset visibility, vulnerability management, threat detection and response, and compliance capabilities across rail-specific systems (CBTC, ERTMS, PTC, interlocking, rolling stock, power supply, CCTV, and station BMS). It is sold as a SaaS subscription to rail operators, complemented by professional services for deployment, Rail SOC building, and vulnerability assessments.
Is Cylus a public or private company?
Cylus is a private company. It is classified as venture growth investor backed and is currently operating.
When was Cylus founded?
Cylus was founded in 2017. It employs 51 to 100 people.
Where is Cylus based?
Cylus is headquartered in Tel Aviv, Israel, in the Middle East region.
How does Cylus make money?
Two revenue lines are on record. CylusOne Platform Subscription is the primary driver. The others are professional Services.
Who are Cylus's main competitors?
Direct peers on record are Cervello and Radiflow. Broad incumbents are Claroty, Nozomi Networks, Dragos, Cybereason, Cisco (Cyber Vision), Honeywell Forge Cybersecurity and Siemens. Waterfall Security Solutions is listed as an emerging player.
Does Cylus have an API?
No public API is recorded for Cylus.
What industry is Cylus in?
Cylus's product category is Rail OT Cybersecurity Software. Its primary akta.pro industry code is TLAJAEAM, Cybersecurity & Safety Assurance for Rail Control Centers (SOC/OT Security, Safety Cases), with a secondary code of IMAIAEAF, Security Systems Monitoring & Dispatch (SOC/Remote Guarding).