Zero trust is a security model that assumes no user or device is trusted by default – every access request is verified regardless of where it comes from. It replaces the old idea of a trusted internal network protected by a firewall at the edge.
Why the old model broke
The traditional model trusted anything inside the office network. But staff now work from home, systems are in the cloud, and attackers who get one foothold move freely across a flat internal network. “Inside” stopped meaning “safe.”
What zero trust means in practice
- Verify every request – identity, device health and context checked each time, not once at login
- Least privilege – people and systems get only the access they need, nothing more
- Assume breach – segment the network so a compromise in one place cannot spread
- Strong identity – multi-factor authentication everywhere, no shared accounts
Where a small business starts
- MFA on every account – email, remote access, key apps
- Remove standing admin rights; grant them when needed
- Conditional access – block logins from unexpected countries or unmanaged devices
- Network segmentation between guest, staff and critical systems
- Monitored EDR on every endpoint
You do not buy “zero trust” as a product – it is a direction you move your setup in. We build toward it as part of our cybersecurity service.
Related security guides
- What a firewall does
- Multi-factor authentication explained
- Network segmentation
- EDR vs antivirus vs MDR
- Security awareness training
- How to prevent ransomware
Want this handled? See our cybersecurity service or talk to our Edmonton team.
Frequently asked questions
Is zero trust just MFA?
MFA is the foundation but not the whole model. Zero trust also covers least privilege, device verification, segmentation and continuous checking. MFA is where almost every small business should start.
Do we need to replace our firewall for zero trust?
No. A firewall is still part of the picture. Zero trust adds identity-based verification and segmentation on top of network controls.
Is zero trust realistic for a small business?
The principles are – MFA, least privilege, segmentation, conditional access are all achievable with Microsoft 365 and standard tools. You do not need an enterprise budget to move in the right direction.
How does Scandifix help?
We assess where you stand, turn on MFA and conditional access, tighten admin rights, segment the network and monitor endpoints – a practical path toward zero trust.