VISO on building their CTEM practice with Nanitor
Hear it directly from VISO's founder. Stephen Parsons, Founder and CEO of VISO, explains how they built their CTEM practice on Nanitor.
Case Study: VISO
How VISO Built a Profitable CTEM Practice with Nanitor
A cybersecurity case study on how VISO developed a scalable Continuous Threat Exposure Management (CTEM) service model.

“We see Nanitor as a partner rather than a product or a vendor. We’re in partnership. We’re delivering the service together.”
- Stephen Parsons, Founder & CEO, VISO
Introduction
VISO, a Dublin-based cybersecurity firm, evaluated Nanitor’s platform in early 2025 with the goal of building a new service offering rather than simply adding another tool.
At that time, many organisations across Ireland and the UK managed vulnerabilities reactively, focusing on periodic scanning and treating exposure primarily as a compliance requirement.
VISO identified an opportunity to develop a Continuous Threat Exposure Management (CTEM) service that could provide ongoing visibility and prioritised risk management.
“We insist on Nanitor. We include it as part of the offering. We don’t try and sell it to them separately.”
- Stephen Parsons, Founder & CEO, VISO
Building a CTEM Service with Nanitor
Instead of positioning Nanitor as a standalone product, VISO embedded it as the underlying platform across its service offerings. This approach ensured that all services were supported by continuous asset discovery, risk-based prioritisation, and real-time visibility.
CISO as a Service
VISO provides CISO as a Service, enabling organisations to access experienced security leadership without the need for a full-time hire.
Nanitor supports this service by delivering a real-time view of the organisation’s attack surface, including risk scores, remediation progress, and trend data.
This allows decisions and reporting to be based on current, measurable data rather than assumptions.
Tiered Security Services
VISO developed a structured Security as a Service model to support organisations of different sizes and maturity levels.
01
Essential
Provides fundamental cybersecurity protection for freelancers and micro-businesses, offering accessible and professional-grade security.
02
Professional
Adds structured controls, centralised management, and endpoint protection for organisations adopting a more organised security approach.
03
Managed
A fully managed service where a dedicated security team supports the organisation with ongoing monitoring, reporting, and strategic guidance.
Across all tiers, Nanitor provides continuous asset discovery and exposure management, enabling consistent visibility across client environments.
Execution and Scalability
VISO onboards clients with full asset discovery from the beginning, ensuring that all environments are visible and continuously monitored.
Nanitor’s multi-tenant architecture enables VISO to manage multiple organisations simultaneously while maintaining operational efficiency.
Results
The service model is based on recurring contracts billed monthly, allowing revenue to grow as clients expand their infrastructure or move between service tiers.
Clients continue to renew and expand their services as they observe improvements in exposure management and remediation progress.
Within fourteen months, VISO became the partner managing the highest number of assets on the Nanitor platform globally.
“It could be per client two to three hours a week of analysis is now gone for clients where we’re using Nanitor.”
- Stephen Parsons, Founder & CEO, VISO
Why This Model Works
01
Platform as Foundation
Nanitor is embedded across all services, ensuring consistent visibility and data-driven decision-making.
02
Scalable Service Model
The tiered structure enables VISO to support organisations of varying sizes using a consistent framework.
03
Focus on Remediation
The approach goes beyond reporting by supporting ongoing risk reduction and remediation.
Recognition
VISO was recognised as Partner of the Year for its growth, technical engagement, and delivery of CTEM services.
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