IT Security Architecture Analysis
75% of breaches result from security architecture flaws. We'll design multi-layered protection based on Zero Trust and segmentation. Protect against lateral movement and minimize breach impact.
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What is IT Security Architecture Analysis?
IT Security Architecture Analysis is an assessment and design service that maps your current infrastructure, identifies the segmentation and access-control gaps that allow lateral movement, and produces a target architecture built on Defense in Depth and Zero Trust principles. nFlo delivers a current-state architecture map with marked security gaps, a target design with microsegmentation and Zero Trust controls, a data flow and access rules matrix, and a phased implementation roadmap — all without requiring a full infrastructure replacement. With 75% of breaches exploiting poor segmentation to enable lateral movement, a well-designed architecture stops attackers early and also satisfies NIS2 and GDPR technical security requirements.
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Discuss IT Security Architecture Analysis with your dedicated account manager.
One compromised workstation = entire network in attacker's hands
Security architecture based on Zero Trust
Current State Analysis
Map architecture, identify critical gaps
Target Design
Design architecture with Defense in Depth and Zero Trust
Implementation Roadmap
Phased implementation plan without downtime
Ransomware Attack That Shouldn’t Have Succeeded
A manufacturing company lost €750,000 through 10 days of production downtime. Attackers gained access through phishing on accounting workstation. From flat network they moved laterally to production servers and encrypted everything.
Without proper security architecture:
- One compromised workstation = access to entire infrastructure
- No segmentation allows free lateral movement by attacker
- Attack detection after damage, not before escalation
- NIS2 and GDPR compliance violation - additional penalties
Architecture That Slows Attacker at Every Step
We design multi-layered protection based on “assume breach” principle - we assume attacker can get in, but we don’t let them spread.
What you get:
- Current architecture map with marked security gaps
- Target architecture design with segmentation and Zero Trust
- Data flow and access rules matrix
- Implementation roadmap with priorities (quick wins + long-term projects)
- Architecture documentation for team and auditors
- Support implementing key elements
Analysis Methodology
We conduct security architecture analysis based on the NIST CSF (Cybersecurity Framework) and CIS Controls v8, ensuring systematic coverage of all protection layers.
Discovery and inventory — we map the complete network topology, data flows between systems, external network touch points, and attack surface. We use both client documentation and active scanning (Nmap, Nessus) to identify the actual infrastructure state. The output is an as-is architecture diagram with marked trust zones and security boundaries.
Gap analysis — each layer is evaluated against Defense in Depth criteria: perimeter (firewall configuration, IPS/IDS, WAF), segmentation (VLANs, microsegmentation, filtering rules), endpoint (EDR, hardening, patch management), identity and access (IAM, MFA, PAM, SSO), data protection (at-rest and in-transit encryption, DLP, classification), and monitoring (SIEM, NDR, log management, retention). Each gap is assigned a severity rating and mapped to the relevant CIS controls and NIS2 requirements.
Target architecture design — based on the gap analysis, we design the target architecture incorporating Zero Trust principles: microsegmentation with per-workload policies, identity-centric access control, continuous device and user trust verification, end-to-end encryption, and centralized logging and detection. The design works with existing infrastructure — we do not force wholesale replacement but identify where to add missing elements.
Implementation roadmap contains prioritized actions across three horizons: quick wins (0-3 months) — configuration changes and MFA rollout; mid-term projects (3-6 months) — critical system segmentation and PAM deployment; transformation (6-12 months) — full Zero Trust and microsegmentation. Each action includes an estimated budget and its impact on risk reduction, enabling the board to make informed investment decisions.
Who Is It For?
This service is for you if:
- You have flat network where everyone has access to everything
- You must meet NIS2, GDPR or industry standards requirements
- You experienced an incident and want to prevent future ones
- You’re implementing new systems and want to do it right from the start
- You’re planning cloud migration and need secure architecture
Key Architecture Elements
Defense in Depth - Layered Protection
We build security at multiple levels:
- Perimeter - network edge protection
- Segmentation - division into security zones
- Endpoint - workstation and server protection
- Applications - WAF, API gateway, access control
- Data - encryption, DLP, backup
- Monitoring - SIEM, detection & response
Zero Trust - Never Trust, Always Verify
- Microsegmentation instead of traditional perimeter
- Authentication and authorization for every request
- Least privilege principle
- Continuous trust verification
Where does privileged access control fit in IT security architecture?
Administrator accounts for the domain, servers, databases and network devices form a separate risk layer in an architecture analysis: a compromised privileged account gives an attacker the same capabilities as the administrator. Privileged access management (PAM) organises this layer as an intermediate point between identities and critical systems:
- Gateway in the administrative zone - administrative traffic to servers and devices passes through a single point, and target systems accept it only from the gateway.
- Integration with IAM and MFA - identity and multi-factor authentication come from the existing directory, while PAM decides which system and which account a session may open.
- Vault and secret rotation - passwords of service and administrative accounts stop living in scripts and spreadsheets.
- Events and session recordings for the SIEM - gateway logs feed monitoring, and a recording makes it possible to reconstruct the course of an incident.
- Least privilege in time as well - permissions granted per task instead of standing membership in administrative groups.
We will show how to fit this layer into your target architecture and Zero Trust model as part of our PAM Implementation service.
PAM supports the technical side of access control - it does not replace risk management, security policies or the organisation’s audit.
Related Glossary Terms
Learn more about key concepts related to this service:
How we work
Our proven service delivery process.
Discovery
Map architecture, data flows, attack surface
Gap Analysis
Identify security gaps and risks
Design
Design target architecture (segmentation, Zero Trust)
Roadmap
Prioritized implementation plan with milestones
Documentation
Architecture diagrams, decision matrix, documentation
Benefits for your business
What you gain by choosing this service.
Limited Attack Impact
Segmentation stops attackers at early stage
Regulatory Compliance
Meet NIS2, GDPR, industry standards requirements
Lower Premiums
Insurers value good architecture
Faster Response
Detect anomalies before they become incidents
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Read more →Frequently Asked Questions
Common questions about IT Security Architecture Analysis.
How long does an IT security architecture analysis take and what exactly do I get?
The analysis takes 1-2 weeks. You receive a map of your current architecture with marked security gaps, a target architecture design with Zero Trust and segmentation, a data flow matrix, and a prioritized implementation roadmap.
Does implementing Zero Trust require replacing the entire infrastructure?
No. We design phased implementation, starting with quick wins (segmentation of critical systems, MFA) without downtime. We leverage your existing firewalls, switches, and IAM solutions, adding missing elements.
How does architecture analysis help meet NIS2 requirements?
NIS2 requires implementing risk management measures, including network segmentation and access control. Our analysis identifies gaps against NIS2 requirements and delivers a plan to close them with documentation acceptable to auditors.
How much does an IT security architecture analysis cost?
Pricing starts from EUR 6,000 for a full analysis with architectural documentation and roadmap. Scope and cost depend on infrastructure size and number of locations.