Modern Cybersecurity

Architecture And Zero Trust Engineering

We help enterprises evolve from legacy networks to identity-centric Zero Trust strategies. Expert implementation of Zscaler, SASE, and secure cloud transformation.

Public CloudSaaSInternetIoT / OTUsersWorkloadsZero TrustExchange
The Firm

Built for the gaps standard Zero Trust deployments leave open.

Principal-led cybersecurity engineering — no staffing pyramid, no handoffs, no security theater.

Arduwyn is a boutique Zero Trust and cybersecurity engineering firm. We exist for the moment a security program meets reality — when the maturity slide says Zero Trust but the network still trusts anything inside the perimeter, when an acquisition doubles the attack surface overnight, and when modern encryption quietly blinds the controls a previous team installed.

We engage where complexity is highest: post-merger environments, security initiatives stalled in proof-of-concept, AI-driven attack-surface expansion, and the Tier-3 and Tier-4 escalations standard implementation partners cannot resolve. Every engagement is delivered by a principal engineer — the person who scopes the work is the person who does it.

The output is technical and direct: architectures that function in production, documentation an auditor and a board can both read, and Zscaler estates that stay stable through change. We are measured by what works after we leave — not by the size of the deck we hand over.

Principal-only delivery

The engineer who scopes your work is the engineer who does it. No junior bench, no knowledge lost in handoff.

Engineering, not slideware

We leave production systems, configuration, and runbooks your team can operate — not a recommendations deck.

Architecture over break-fix

Most operations work is reactive. We spend ours preventing the incident — tuning policy before it drifts and evolving the design ahead of the threat.

We engage where it's hardest

Post-merger chaos, stalled programs, production-blocking escalations — the work other firms decline.

For the CISO

Outcomes a security program can be measured on

Zero Trust framed as a business result — not an architecture diagram.

Measurable risk reduction

VPNs retired, lateral movement closed, third-party access scoped per application and per session. Exposure you can show the board moving down — not just a control checklist marked complete.

Audit & compliance readiness

Architectures mapped to HIPAA, PCI DSS, NIST CSF, and GDPR, with evidence generation built into the design — so an audit becomes a report you run, not a fire drill you survive.

Board-ready clarity

Technical posture translated into the language a board funds: what is exposed, what it would cost, and what each phase of the roadmap actually buys down. Documentation written for the room, not the wiki.

Resilience through change

Mergers, cloud migration, and AI adoption handled without security becoming the thing that blocks the business — or the thing that breaks when the business moves fastest.

Services

Comprehensive security solutions designed for modern enterprises

Strategy

Zero Trust Architecture & Strategy

  • Zero Trust maturity assessments
  • Architecture design and roadmap creation
  • Identity-centric security planning
  • Network perimeter elimination
  • Trust boundary modeling
Engineering

Zscaler Engineering & Implementation

  • ZIA deployment & policy design
  • ZPA deployment & App Connector architecture
  • Internet security, TLS inspection, DLP
  • Zscaler + IdP integration (Okta, Entra ID)
  • Tenant recovery & performance tuning
Identity

Secure Access & Identity Integration

  • ZTNA for workforce & third-party access
  • MFA, conditional access, identity hardening
  • IAM modernization
  • Continuous posture validation
  • SSO architecture and rollout
Cloud

Cloud & Network Security Engineering

  • SASE strategy development
  • Secure SD-WAN
  • Cloud workload security (AWS / Azure)
  • Segmentation & microsegmentation
  • Inline DLP for GenAI workflows
Assessment

Security Posture Assessments

  • Zero Trust Maturity Model alignment
  • PCI DSS, HIPAA, GDPR, NIST CSF gap analysis
  • TLS 1.3 / QUIC encryption visibility audit
  • AI attack-surface & agent-mode review
  • Board-ready risk documentation
Advisory

Architecture Advisory & Consulting

  • CISO-level architecture advisory
  • Documentation, diagrams, and training
  • 3–12 month retainer with on-call escalation
  • Migration planning & modernization
  • Vendor selection guidance

Industry focus

We go deep in two regulated, high-stakes verticals — rather than thin across all of them.

Case Studies

Selected engagements across healthcare, financial services, and enterprise M&A.

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Healthcare — First Zero Trust Clinic

Designed and delivered the first enterprise Zero Trust healthcare clinic. Eliminated VPN dependency across clinical and administrative environments and deployed AI guardrail controls for clinical GenAI workflows.

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Healthcare — First Zero Trust Clinic

Designing and delivering the first enterprise Zero Trust healthcare clinic — VPN-free across clinical and administrative environments.

First
enterprise ZT clinic
VPN-free
clinical & admin access
GenAI
guardrails for clinical AI

Situation

A large healthcare system needed a clinic environment that met modern Zero Trust expectations: no flat clinical network, no VPN dependency for staff, and controls capable of governing an emerging set of clinical GenAI workflows.

Approach

  • Identity-centric access design for clinical and administrative users
  • ZPA replacing VPN for internal application access
  • Segmentation isolating clinical systems and connected medical devices
  • Inline AI guardrail controls for clinical GenAI tooling

Outcome

The first enterprise Zero Trust clinic delivered — VPN dependency eliminated for clinical and administrative staff, and a repeatable architecture pattern established for the rest of the estate.

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Enterprise M&A — Merger Stabilization

Primary security authority during a 120,000+ user enterprise merger experiencing production-blocking failures. Established a unified Zero Trust posture across both entities and recovered tenant stability.

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Enterprise M&A — Merger Stabilization

Primary security authority for a 120,000+ user merger with production-blocking failures across both estates.

120K+
users across both entities
2
Zscaler estates unified
Primary
security authority

Situation

Two large enterprises combining — with overlapping Zscaler tenants, conflicting policy frameworks, and failures severe enough to block production work for end users.

Approach

  • Acted as primary security authority across both entities
  • Unified the Zero Trust posture and identity model
  • Reconciled two conflicting policy frameworks into one
  • Stabilized App Connector and tenant configuration
  • Staged migration in controlled waves with rollback drills

Outcome

A single, stable Zero Trust posture across the combined 120,000+ user organization — production failures resolved and a repeatable post-merger playbook left behind.

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Financial Services — ZT Program Recovery

Recovered a Zero Trust initiative stalled in proof-of-concept for over two years. Re-architected the program for operational execution during a major brokerage merger — delivering results where previous efforts had failed.

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Financial Services — ZT Program Recovery

Recovering a Zero Trust program stalled in proof-of-concept for over two years — and delivering it during a major merger.

2+ yrs
stalled in proof-of-concept
Live
moved to operational execution
M&A
delivered through the merger

Situation

A Zero Trust initiative had been stuck in proof-of-concept for more than two years with no path to production — while a major brokerage merger raised both the stakes and the complexity.

Approach

  • Re-scoped the program around operational execution, not indefinite evaluation
  • Rebuilt the architecture for a production rollout
  • Sequenced delivery to absorb merger complexity
  • Established measurable milestones where prior efforts had none

Outcome

A Zero Trust program moved out of two-year proof-of-concept and into operational execution — delivering results during the merger where previous efforts had repeatedly failed.

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Technical Briefs

Sample analysis — the depth a brief delivers.

Automation

Zscaler as Code

Provisioning ZPA through Terraform, not the console.

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Data Protection

DLP in Layers

Four enforcement points — and why endpoint is non-negotiable.

Read brief →

How we engage

Three lanes, each scoped and priced up front. Start with a brief — not a contract.

Design

Architecture & Strategy

For programs that need a credible Zero Trust target state — and a roadmap that survives contact with the existing environment.

You receive

Reference architecture, maturity assessment, trust-boundary model, and a phased roadmap with board-ready documentation.

4–8 weeks · fixed scope
Build

Zscaler Engineering & Recovery

For deployments to stand up, stabilize, or escalate — including Tier-3 and Tier-4 incidents blocking production today.

You receive

Engineered ZIA / ZPA / ZDX configuration, identity integration, tenant recovery, and the runbooks to operate it.

2–10 weeks · scoped to the problem
Advise

Advisory Retainer

For teams that need principal-level judgment on call — for design reviews, escalations, and vendor decisions — without adding headcount.

You receive

Ongoing architecture review, escalation support, and roadmap and vendor-selection guidance.

3–12 month retainer

Every engagement starts the same way — a technical brief, not a sales call. Tell us the constraint, and we respond within one business day with scope, deliverables, and a price.

FAQ

What is your engagement model?
Structured scope, fixed deliverables, no retainer required to begin. Three lanes — Architecture & Strategy, Zscaler Engineering & Recovery, and Advisory — each with defined scope and measurable output. Advisory retainers run 3–12 months for teams needing principal-level input without the headcount.
Do you work alongside our existing security team?
Yes — that is the normal case. We integrate with your team, transfer knowledge as the engagement runs, and leave documentation and runbooks so your staff owns the result. The goal is a capable internal team, not a permanent dependency on us.
Can you help with an active incident or outage?
Yes. A significant share of our work is Tier-3 and Tier-4 escalation — production-blocking Zscaler failures, post-cutover instability, broken identity integration. We can engage on an expedited basis; tell us the impact and we will respond within one business day.
Which industries and compliance frameworks do you work within?
Primarily healthcare, financial services, and enterprise M&A. Engagements are routinely mapped to HIPAA, PCI DSS, NIST CSF, and GDPR, with evidence and documentation designed to hold up under an audit rather than be assembled in a rush before one.
Do you resell Zscaler — and does that bias your recommendations?
Arduwyn provides Zscaler licensing and procurement as part of a full engagement, so we can take a client from advisory through to managed services. But much of our work is for organizations that already own Zscaler or buy through a VAR — and the recommendations are identical either way. We size to what the architecture actually needs, and we will tell you when a different tool, or no additional spend, is the right answer.
How do engagements start, and how are they priced?
Every engagement starts with a technical brief — a scoping conversation, not a sales pitch. From there, scope and deliverables are fixed and priced up front. No open-ended billing, and no retainer required to begin.
Engage

Start with a technical brief.

Tell us the constraint — a stalled program, a merger, a Tier-3 escalation, or a Zero Trust target state you need defined. We respond within one business day.