SASE and Zero Trust.

Better, together.

What’s wrong with your traditional approach to cybersecurity? It’s worked out so far – or has it?

Sadly, increasingly complex IT environments and shadow IT are making it ever harder to protect your systems. With cloud, SaaS and unmanaged devices creating blind spots, combined with the increasing sophistication of cyber threats, it’s time to stop trusting everybody, or anybody.

Now, Zero Trust and SASE are the ‘what’ and ‘how’ of a robust, modern security architecture. While Zero Trust defines the rules 
of engagement for security, SASE (secure access service edge) provides the delivery mechanism to enforce those rules 
at scale.

Zero Trust, 
maximum impact

Catchy name – but what exactly is Zero Trust?

Zero Trust is a security philosophy/strategy. It focuses on the principles of identity and access and is based on the core idea of ‘never trust, always verify’. The ‘never trust’ approach extends to devices, users, and networks.

Zero Trust is built on five pillars:

Verify every user, every single time. Unlike traditional IT network security, no user is trusted simply because they are already inside the network.

Verify that every device attempting access is trusted and compliant. If a device is compromised or unmanaged, it’s denied access regardless of user identity.

Segment, monitor and secure all network traffic – no exceptions: Even internal network traffic is treated as potentially hostile.

Secure and authorise access to every application and workload. Say goodbye to old, unsafe VPNs with granular, per-application access for authorised users with verified devices – no one else.

Protect and govern data, whatever and wherever it is: Grant access based on sensitivity, context, and need-to-know.

So, is Zero Trust security a solution or a philosophy?

It’s both. Zero Trust Network Access (ZTNA) technology enables you to implement Zero Trust security.

Put simply, with ZTNA from a vendor like Cloudflare or Island, your users can access only the specific applications they need, never the whole network (and only after rigorous verification).

The key benefits of ZTNA:

Bye-bye VPN:

In 2025, 56% of organisations were targeted by cyberattacks that exploited VPN vulnerabilities. With 44% of employees working remotely and 50% using their own devices to access internal resources, VPNs are ill-equipped to cope. With ZTNA, your users will have a safer, faster experience (including seamless login) than a VPN can offer. ZTNA enables your remote workers to access resources securely from wherever they are.

Smaller attack surface:

ZTNA reduces your attack surface by making your applications invisible to unauthorised 
users. And what they can’t see, they can’t 
attack.

Lateral movement:

With no broad network access granted to users, they can’t navigate outwards through your network to find and compromise your data or systems.

Cloud- and hybrid-ready 
(and scalable):


ZTNA works for on-prem, cloud, and SaaS apps. 
As a cloud-native solution, it scales without hardware.

Compliance-friendly:

ZTNA also provides detailed logs and access controls so user activity can be monitored 
and audited.

Then, there’s SASE.

If you consider Zero Trust to be a security blueprint, then SASE is the actual building.

In short, SASE is a cloud-based platform that combines networking and security into one unified service, delivered 
from the cloud, closest to where your users actually are.

SASE solutions offer a practical and scalable way to implement Zero Trust in a modern, cloud-first, distributed enterprise. And the good news is that ZTNA is a core component delivered within SASE.

The key benefits of SASE:

Cloud-delivered:

Like all things cloud, it requires no hardware, is always up-to-date, and scales up or down instantly.

Edge-based:

Security is delivered close to your user 
(so it’s not routed back to a central data centre), and it’s faster and more efficient.

Networking and security together:

Merged on the one platform, meaning it’s 
simpler to manage and there are fewer gaps.

Identity-driven access:

Works seamlessly for your office, remote, and mobile users with access determined by who they are, not where they are!

Reduced attack surface:

Moving from a perimeter-based security approach (which creates 
blind spots) to an identity-based approach reduces the number of avenues attackers can use to access your network and applications.

So, what next?

Endpoint Focus can assess your current environment to determine the gaps you need to close to achieve a Zero Trust approach. And then, we recommend the right approach and solution to meet your unique requirements.

If you’d like to know more about how to future-proof your security strategy, simplify compliance, improve security, and embrace scalability – let’s talk.