Overview
Zero Trust is a security model that grants no implicit trust to any user, device or workload, regardless of whether it sits inside or outside the network. As defined in NIST SP 800-207, every access request is evaluated individually in the context of identity, device posture, location, behavior and sensitivity; access is granted only to the resource required and only for as long as it is needed. Our Cloud & Zero Trust Security service brings this principle to your cloud, hybrid and on-premise environments as a holistic architecture and delivers it as a managed service operated continuously by Indexline.
Traditional perimeter security relies on a "castle and moat" approach that treats the inside of the corporate network as safe and the outside as dangerous. Remote work, SaaS applications, multi-cloud adoption and supplier access have effectively dissolved that perimeter. Today, users work from home, from the field and from mobile devices, while applications are served from different cloud providers. Attackers know this too: a single compromised credential is often enough to reach critical systems through lateral movement across a flat network. Zero Trust shrinks this risk with identity-centric controls built on the principle of least privilege.
Zero Trust is not a single product but an architecture of complementary technologies. The identity layer includes identity providers such as Okta, Microsoft Entra ID or Keycloak, multi-factor authentication (MFA) and conditional access policies. The access layer includes ZTNA (Zero Trust Network Access), which replaces VPN, and SASE/SSE architectures that combine ZTNA with cloud-based security services such as secure web gateways (SWG) and CASB. Micro-segmentation operates at the network layer, CSPM and CWPP tools at the workload layer, and classification, encryption and DLP controls at the data layer. Telemetry from all of these layers is correlated in SIEM and EDR/XDR platforms to enable continuous verification.
For organizations that do not move to a Zero Trust approach, the risk picture is clear. Passwords stolen through phishing, remote access points without MFA, over-privileged service accounts and misconfigured cloud storage are the most common starting points for ransomware and data breach incidents. A single incorrect permission setting in the cloud can leave sensitive data exposed to the internet. In addition, frameworks such as KVKK (Turkish Personal Data Protection Law), BDDK (Banking Regulation and Supervision Agency) regulations and ISO 27001 increasingly demand concrete evidence on access control, logging and least privilege; fragmented security controls make that evidence hard to produce.
Indexline treats Zero Trust transformation not as a one-off product installation but as a measurable maturity program. First, your identities, devices, applications, data flows and existing security investments are inventoried; then a target architecture and phased roadmap are built with reference to the CISA Zero Trust Maturity Model. Your existing firewall, EDR, SIEM and identity infrastructure are reused wherever possible to preserve the value of your investments. After deployment, policy management, access requests, continuous monitoring, incident response and periodic reporting are taken on by the Indexline team as part of the managed service.
How It Works
Discovery and Inventory: User and service accounts, devices, applications, cloud resources and data flows are inventoried. Critical assets and "protect surfaces" are identified.
Maturity Assessment: The current state is scored across the identity, device, network, application and data pillars according to the CISA Zero Trust Maturity Model. Gaps and quick wins are reported.
Target Architecture and Roadmap: Policy decision and enforcement points are designed on the basis of the NIST SP 800-207 reference architecture. A phased migration plan that also covers existing security investments is approved.
Identity Foundation: A central identity provider, SSO, phishing-resistant MFA and conditional access policies are deployed. Privileged accounts are brought under PAM.
Device and Access Control: Device compliance checks (encryption, patching, EDR status) are tied to access decisions. VPN-based access is gradually transformed into application-level access with ZTNA.
Micro-Segmentation and Cloud Posture: Segmentation is applied between networks and workloads based on the principle of least privilege. Cloud misconfigurations are continuously scanned and remediated with CSPM.
Continuous Monitoring and Response: Identity, endpoint, network and cloud telemetry is correlated in the SIEM. Anomalous sessions, risky sign-ins and privilege abuse are monitored 24/7 and handled with playbooks.
Management and Continuous Improvement: Policy changes, access reviews and new application integrations are carried out as part of the managed service. The program is updated through monthly reports and quarterly maturity assessments.
Key Features
Identity-Centric Access
SSO based on Okta, Microsoft Entra ID or Keycloak, phishing-resistant MFA (FIDO2/passkey) and risk-based conditional access policies are designed and managed.
VPN Transformation with ZTNA
Users access only the applications they are authorized for, not the entire network. Applications are published securely without being exposed directly to the internet.
Device Trust Verification
Device signals such as disk encryption, operating system patch level and EDR status are checked at every access decision; non-compliant devices are restricted.
Micro-Segmentation
Traffic between servers, containers and workloads is restricted on the principle of least privilege. The scope for lateral movement is significantly reduced.
Cloud Security Posture (CSPM)
Misconfigurations, exposed storage and excessive permissions are continuously scanned and remediated across the cloud environments you use, including AWS, Azure and Google Cloud.
Privileged Access Management
Just-in-time access, a password vault and session recording are applied to administrator and service accounts; standing privileges are reduced.
Data-Centric Protection
Sensitive data is classified and protected wherever it resides through encryption, DLP and access policies.
24/7 Monitoring and Reporting
Identity, endpoint and cloud events are correlated in the SIEM. Maturity scores, policy violations and access metrics are shared in monthly reports.
Benefits & Advantages
A single compromised credential no longer means access to the entire network; the blast radius of an attack is reduced.
VPN-related bottlenecks and attack surface are reduced; remote users access applications faster and more securely.
Disconnected security tools are unified under a common policy logic, increasing the value delivered by security spending.
Cloud misconfigurations are continuously detected and remediated, proactively reducing the risk of data breaches.
Access control and logging evidence for KVKK, ISO 27001 and sector regulations is produced centrally and ready for audit.
Access for suppliers, business partners and temporary staff is managed with limited scope and duration and full traceability.
Because Indexline takes on the design and day-to-day operation of the Zero Trust program, in-house teams can focus on strategic work.
Industry Use Cases
Finance / Banking
A participation bank replaced VPN access for branch and head office users with ZTNA; introducing just-in-time access for privileged accounts reduced standing administrator rights by 80%.
Healthcare
A hospital group tied access to its HIS and PACS systems to role and device compliance; micro-segmentation isolated the medical device network from the office network.
Manufacturing
An automotive supplier restricted supplier maintenance teams' access to OT systems to recorded, time-limited sessions; third-party risk became visible and controllable.
Public Sector
A municipality consolidated staff and contractor access under central identity and MFA; during KVKK audits, access logs could be reported within minutes.
Retail / E-Commerce
On an e-commerce platform running across multiple clouds, CSPM detected and remediated more than 300 misconfigurations; test databases left exposed to the internet were shut down.
Education
A foundation university managed access by students and academics from personal devices through conditional access policies; account takeover incidents caused by phishing dropped markedly.
The Indexline Approach
We see Zero Trust not as a product purchasing decision but as a transformation program that changes an organization's security operating model. Many tools are marketed under the "Zero Trust" label; the value, however, comes from these tools working with a common policy logic across the identity, device, network, application and data layers. That is why we start every project not with technology selection, but by understanding the business processes and data that need protecting.
We position identity as the new security perimeter. Cleaning up user and service accounts, connecting them to a central identity provider, protecting them with phishing-resistant MFA and bringing privileged accounts under PAM are the first, highest-return steps of the Zero Trust journey. Network and segmentation investments made before this foundation is firmly in place do not deliver the expected impact.
We prioritize phased progress and business continuity. Policies first run in audit mode, real access behavior is observed, and the switch to enforce mode is made without disrupting the user experience. Starting with pilot groups and expanding toward critical applications, this approach makes it easier for both security teams and business units to take ownership of the transformation.
We respect your existing investments. Most organizations have already invested in firewall, EDR, SIEM and identity solutions. Rather than replacing these components, Indexline positions them within the Zero Trust architecture as policy enforcement points and telemetry sources, and adds the capabilities that are genuinely missing based on the balance between need and budget.
We believe Zero Trust is not a destination but a continuously operated discipline. New applications, new user groups and an evolving threat landscape require policies to be updated constantly. That is why we do not end the program at deployment; we sustain it as a living structure by bringing every new application and user group into the same policy framework, and progress is measured transparently with metrics such as maturity score, MFA coverage, number of standing privileges and cloud configuration findings.
Frequently Asked Questions
Is Zero Trust a single product?
No. Zero Trust is a security model and an architectural approach. NIST SP 800-207 defines the model through a policy decision point (PDP) and policy enforcement points (PEP). In practice, multiple components such as an identity provider, MFA, ZTNA, EDR, micro-segmentation, CSPM and SIEM work together.
Do we need to shut down our existing VPN infrastructure right away?
No. The migration is phased. Web-based and critical applications are published through ZTNA first, and user groups are moved over gradually. For some systems that use legacy protocols, VPN can remain in use for a while in a limited scope; the goal is to eliminate VPN's model of granting access to the entire network.
How long does a Zero Trust transformation take?
It depends on the scope. Quick wins such as the identity foundation, MFA and conditional access are usually deployed within the first 2-3 months. More extensive steps such as ZTNA, micro-segmentation and data protection are spread over a 12-24 month roadmap. Each phase delivers measurable risk reduction on its own.
Which identity and security technologies do you work with?
We integrate with identity providers such as Okta, Microsoft Entra ID and Keycloak; PAM solutions such as CyberArk, BeyondTrust and Delinea; and widely used EDR, firewall and SIEM platforms. We first assess your existing infrastructure, then jointly select the missing capabilities based on need and budget.
Does Zero Trust make the user experience harder?
When designed correctly, it actually makes it easier. With SSO, users access all applications with a single identity, and passwordless methods such as passkeys and FIDO2 speed up sign-in. Thanks to risk-based policies, additional verification is requested only when an unusual location, device or behavior is detected.
How does Zero Trust contribute to KVKK compliance?
KVKK requires appropriate technical and administrative measures to prevent unauthorized access to personal data. The principle of least privilege, MFA, centralized access logs, periodic access reviews and data encryption are concrete implementations of these measures. A Zero Trust architecture delivers these controls together with audit-ready evidence.
Who is responsible for security in cloud environments?
The shared responsibility model applies. The cloud provider protects the physical infrastructure and virtualization layer, while identity management, access permissions, network configuration and data protection are the customer's responsibility. Indexline takes on these customer-side responsibilities as a managed service through CSPM, identity policies and continuous monitoring.
What does Indexline take on as part of the managed service?
The service scope covers policy management and changes, ZTNA and SSO integration of new applications, access requests and periodic access reviews, tracking of cloud configuration findings, 24/7 monitoring and incident response, and monthly reporting. Authority boundaries and approval workflows are defined at the start of the contract together with a RACI matrix.