BUS 237 · Emerging Technology
Zero Trust Security Architecture replaces automatic network trust with continuous, context-aware verification—protecting each user, device, application, and data request individually.
Never trust, always verify.
What changed?
Traditional security often treated people inside the office network or connected through a VPN as trusted. Zero Trust assumes threats may already exist and evaluates every access request.
Once an attacker crosses the perimeter, broad internal access may allow them to move laterally and reach more systems.
Identity, device condition, location, behaviour, and business need are assessed before access is granted.
How access is decided
Every request is evaluated using multiple signals rather than a single password or network location.
Confirms that the user is who they claim to be through multi-factor authentication, sign-in risk, and role-based permissions.
Checks whether the laptop, phone, or medical device is managed, updated, encrypted, and free from known threats.
Evaluates location, time, behaviour, sensitivity of the resource, and whether the request is necessary for the user’s job.
Industry impact
Hospitals and clinics hold highly sensitive patient, insurance, and financial information while operating large networks of staff, vendors, cloud services, and connected medical devices.
It is a constantly changing ecosystem of people, devices, applications, and data.
Access to medical records can be limited to the exact patients, systems, and tasks required for a worker’s role.
If one staff account or workstation is compromised, segmentation and least privilege help prevent the attacker from freely reaching other systems.
Smart pumps, MRI systems, patient monitors, and other medical technologies can be isolated and continuously monitored based on risk.
A compromised scheduling account may still be blocked from patient records, finance systems, and clinical devices because each resource requires separate authorization.
Business view
Vendor ecosystem
No single product creates Zero Trust by itself. Organizations combine identity, endpoint, network, cloud, data, and monitoring technologies.
Zscaler Private Access connects users directly to approved applications instead of placing them broadly on the corporate network.
Microsoft Entra ID and Defender provide identity verification, conditional access, device signals, and threat protection across Microsoft environments.
Prisma Access applies cloud-delivered security controls to users, applications, network traffic, and remote devices.
Okta focuses on identity management, authentication, and real-time access policies for employees, customers, and applications.
Large organizations have used Zero Trust strategies to modernize access and protect distributed systems.
The future of Zero Trust
As organizations use more cloud services and AI-enabled systems, access decisions are expanding beyond passwords to include behavioural analytics and automated risk detection.
AI-assisted anomaly detectionSystems learn normal patterns and identify unusual activity.
Adaptive authenticationHigher-risk requests trigger additional verification.
Policy-driven automationSuspicious access can be blocked in real time.
Growing regulatory expectationsGovernment and regulated industries increasingly treat Zero Trust as an important security direction.
Further information
Use these sources to explore Zero Trust standards, maturity models, implementation guidance, and breach-cost research.