Security Hardening

Tough love for your tech stack

Our security hardening service is like a deep clean for your infrastructure. We’ll streamline what you actually use and shut down what you don’t. 

By reducing unnecessary services and tightening controls across systems, we help you shrink your attack surface and stick to your cyber strategy. Whether you're responsible for business-critical apps or community-facing services, we assess, audit, harden, and reinforce.  

From mailbox rule protection to Microsoft Secure Score improvements, it’s about making practical changes that give you more confidence and less to worry about. 

Why choose Nasstar?

From securing everyday tools like Office 365 to building long-term resilience into your infrastructure, we put strategy before stress.

There’s always something running in the background that doesn’t need to be. Our hardening services help you clean up, lock down, and stay ahead of the stuff that puts your business at risk. Whether you need a quick fix or a full security refresh, we’ve got you covered.

We’ve worked with teams mid-incident, post-incident, and happily pre-incident - and we know how to turn messy systems into secure, resilient ones. Whether you’re navigating internal politics or external audits, we’ll help you get your defences up and take the pressure off your team.

Between phishing attempts, rule-based shenanigans, and mystery logins, things get messy fast. Our Microsoft Office 365 Security Hardening service strengthens your email and collaboration environment with advanced protections.

We never treat security as a checkbox or a last-minute scramble. Our experts will set up the right controls, close the right gaps, and make sure your systems can take a hit and keep going.

Whatourexpertsays...

Cyber criminals are always looking for new and innovative ways to hack into organisations, so "hardening" your environment is vital for protecting your technology tools and solutions. At Nasstar, our security hardening service allows you to focus on business while we keep you safe and secure.

Justin BarkerEmployee Experience Practice Lead, Nasstar

Case studies

We’ve worked with several businesses to improve their security defences and protect against ever-changing cyber risks.

Energy & Utilities

Correla

What others have to say…

"Support, expertise, and tailored services from Nasstar played a crucial role in the successful and efficient migration and separation of our systems. Their seamless management of data and migration minimised disruptions, while their responsive and proactive approach and understanding of our business were extremely beneficial in delivering a project of this size."

Sandra Simpson

Chief People Officer

Correla

FAQs

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Security hardening is where organisations, such as Nasstar, help businesses to reduce their IT vulnerabilities. It can help to prevent cyber attacks and data breaches by improving the effectiveness of the business’ security defences. 

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Security Hardening Services | Nasstar