Security that protects your people, data and reputation
End-to-end protection across identities, data, devices, email, cloud and networks, with 24/7 detection and response from our own team.
Attacks are getting more frequent and more costly
Phishing, ransomware, insider threats and zero-day exploits are all on the rise. For Irish businesses, a single incident can mean lost data, regulatory fines and damage to the trust you've built with customers.
Good security isn't a product you buy once. It's people, processes and constant vigilance, with audit-ready controls for GDPR, ISO 27001 and NIS2 built in.
Our approach
- Reduce your critical risks first, where the exposure is greatest
- Protect users, devices, networks and cloud as one estate
- Respond fast when something gets through
- Build security into your operations and culture
Layered protection, managed for you
Choose a single service or let us run your security end to end.
Managed security services
Round-the-clock monitoring, detection and response from our Security Operations Centre (SOC).
Cloud Shield 365
Our own protection for Microsoft 365, Azure and endpoints, built for Irish businesses. How it works.
Threat detection & response
Proactive threat hunting and rapid containment, so incidents are stopped before they spread.
Endpoint & network protection
Next-generation endpoint detection and response, backed by managed firewall protection.
Identity & access management
Zero-trust frameworks and secure authentication, so only the right people get in.
Security awareness training
Practical training that helps your people spot attacks and stop them.
Find your gaps before attackers do
Independent penetration testing shows where your business is vulnerable and exactly how to close each weakness. It gives you a view that tools and scans alone can't.
Tell us what you need tested and when you'd like to start, and we'll come back with a tailored quote within one business day.
Why test?
- See what attackers can reach. A real-world view of what is exposed, exploitable and high-risk.
- Get clear, prioritised fixes. Practical guidance for your IT team on what to fix first, and how.
- Prove your security posture. Evidence of independent testing for auditors, insurers, customers and leadership.
Cyber security with Nostra, in plain English
Good security isn't a product you buy once — it's people, processes and constant vigilance. Our cyber security service protects your identities, data, devices, email, cloud and networks as one estate, with 24/7 detection and response from our own Security Operations Centre (SOC) and audit-ready controls for GDPR, ISO 27001 and NIS2 built in. Phishing, ransomware, insider threats and zero-day exploits are all rising, and for an Irish business a single incident can mean lost data, regulatory fines and damaged customer trust.
Layered protection, managed for you
Choose a single service or let us run security end to end: round-the-clock SOC monitoring, detection and response; Cloud Shield 365 for Microsoft 365, Azure and endpoints; proactive threat hunting and rapid containment; next-generation endpoint protection backed by managed firewalls; zero-trust identity and access management; and practical security awareness training that helps your people spot attacks.
Find your gaps before attackers do
Independent penetration testing gives you a real-world view of what's exposed, exploitable and high-risk, with clear, prioritised fixes — and evidence of independent testing for auditors, insurers, customers and leadership. Tell us what you need tested and we'll come back with a tailored quote within one business day.
Where we start
We reduce your critical risks first, where the exposure is greatest — then build security into your operations and culture. Take the three-minute cyber security readiness assessment to see your biggest gaps.
Cyber security questions
What is a SOC?
A Security Operations Centre: the team that monitors your environment around the clock, detects threats and responds to them. Nostra's SOC is our own in-house team, not an outsourced service, and it works 24/7.
Does a smaller business really need 24/7 monitoring?
Attacks don't keep office hours, and phishing, ransomware and zero-day exploits are rising for businesses of every size. A single incident can mean lost data, regulatory fines and damaged trust — managed monitoring means someone is always watching so you don't have to staff it yourself.
What does a penetration test involve?
An independent, real-world test of what an attacker could actually reach, with clear prioritised fixes for your IT team and evidence of testing for auditors, insurers and customers. Tell us what you need tested and you'll have a tailored quote within one business day.
What is Cloud Shield 365?
Nostra's own protection for Microsoft 365, Azure and endpoints — ten layers covering threat protection, monitoring and automated response, built for Irish businesses that run on Microsoft 365.
Do you train our staff too?
Yes. Practical security awareness training helps your people spot attacks and stop them, because security culture matters as much as technology.
Will this satisfy our auditors?
The service is built with audit-ready controls for GDPR, ISO 27001 and NIS2, and penetration test reports give you independent evidence. For full certification support, see our compliance service.
Related services
Free cyber security readiness assessment
How ready is your business for a cyber attack? Ten questions, three minutes, and a score with your three biggest gaps.
Not sure where to start?
Book a free 30-minute IT health check. We'll tell you what's working, what's at risk and what we'd fix first. No obligation.