Identities and access: why they are the first link in cyber resilience

Identities and access

Who has access to your organization?

A compromised identity can open more doors than a vulnerability

Every organization has dozens, hundreds, or even thousands of digital identities. Employees, administrators, third-party contractors, applications, and automated services use accounts every day to access systems and data. Each of these identities represents an entry point into the organization's infrastructure.

The challenge is not the number of identities. It begins when the organization no longer knows who has access, what permissions each user has, and whether those permissions are still justified.

Think about a former employee whose account was never disabled, or an external contractor who still has access to critical systems after a project has ended. Situations like these can go unnoticed for months and eventually become entry points for a security incident.

For an attacker, compromising an identity is often easier and more effective than exploiting a technical vulnerability. A legitimate account provides direct access to organizational resources and allows malicious activity to blend in with normal user behavior without immediately raising suspicion. That is why identities have become one of the primary targets of cyberattacks.

When an organization loses control over its identities, it also loses control over access to its infrastructure. Without that control, the effectiveness of other security measures is significantly reduced. This is why identity and access management represents the first building block of cyber resilience.

Access must be managed, not assumed

Granting access is only the beginning. If access rights are not reviewed regularly, they tend to accumulate over time, giving users more permissions than they actually need.

Every unnecessary permission expands the organization's attack surface. The objective is not to restrict access, but to ensure that the right person has the right access at the right time.

This process is managed through Identity & Access Management (IAM) – the set of policies, processes, and technologies that enable an organization to manage digital identities and control access to its resources.

A mature IAM program covers the entire identity lifecycle and includes capabilities such as authentication through Multi-Factor Authentication (MFA) and Conditional Access, authorization through Role-Based Access Control (RBAC) and the Principle of Least Privilege, Identity Lifecycle Management, and the temporary assignment of elevated permissions through Just-in-Time Access.

For accounts with elevated privileges, Privileged Access Management (PAM) provides an additional layer of control. As a component of IAM, PAM is designed for administrators and other privileged users, applying enhanced controls over how privileged access is granted, used, and monitored.

Together, these capabilities reflect the maturity of an IAM program. They enable organizations to control who has access to which resources, reduce the risk of unauthorized access, and demonstrate governance, accountability, and traceability of digital identities—capabilities that are also essential for meeting the requirements of the NIS2 Directive.

All of these mechanisms are brought together under the Zero Trust security model, which is based on a simple principle: no user or device is trusted by default. Every access request is continuously verified based on identity, context, and risk, regardless of whether it originates from inside or outside the organization.

A resilient organization is concerned with more than simply allowing users to authenticate. It ensures that every access right is justified, documented, and reviewed on a regular basis. This helps reduce the risk of excessive permissions and forgotten accounts before they can be exploited.

Identity management is not a one-time project that ends with the deployment of a solution. It is an ongoing process that must continuously adapt to organizational changes, ensuring that every user retains only the access required for their role.

If the first link in the chain is weak, the entire cyber resilience strategy becomes vulnerable.

Access control makes the difference during an incident

When a security incident occurs, time becomes one of the organization's most valuable resources. Security teams must quickly determine whether they are dealing with a legitimate user, a compromised account, or unusual use of existing privileges.

If the organization cannot immediately answer the question "Who is logging in, and what do they have access to?", incident investigations take longer and the operational impact increases.

To answer these questions efficiently, organizations need centralized visibility into authentication events and access rights. SIEMBIOT, developed by Expertware in partnership with the Romanian National Cyber Security Directorate (DNSC), correlates events from infrastructure and identity systems. This enables SOC analysts to identify suspicious logins, unusual privileged account activity, and understand the context of an incident before it spreads to other systems.

The objective is not simply to block unauthorized access. It is to reduce the time required to detect, investigate, and contain a security incident.

A well-designed IAM program cannot prevent every cyberattack. What it can do is limit how far an attacker can move after compromising an identity, reducing the likelihood of lateral movement to other critical systems and resources.

Frequently asked questions

What is Identity & Access Management (IAM)?

Identity & Access Management (IAM) is the set of policies, processes, and technologies organizations use to manage digital identities and control user access to systems and data throughout the entire identity lifecycle.

What is Privileged Access Management (PAM)?

PAM is a specialized component of IAM designed to secure privileged accounts. It controls and monitors administrator access and other high-privilege accounts, reducing the risk of unauthorized use.

What is the Zero Trust model?

Zero Trust is a security model that assumes no user or device should be trusted by default. Every access request is continuously verified based on identity, context, and risk.

Is Multi-Factor Authentication (MFA) enough?

No. MFA significantly reduces the risk of compromised accounts, but it should be combined with IAM policies, RBAC, regular access reviews, and continuous monitoring of suspicious activities.

What is the Principle of Least Privilege?

The Principle of Least Privilege ensures that every user receives only the minimum permissions necessary to perform their job. This limits the potential impact if an account is compromised.

Why should access rights be reviewed regularly?

Users' roles and responsibilities change over time. Regular access reviews help remove permissions that are no longer required and reduce the risk posed by forgotten accounts or unnecessary access rights.

Identity and access management is the foundation of a resilient organization. When an organization knows who has access, what permissions each user holds, and can quickly identify unusual activity, the time needed to detect and respond to incidents is significantly reduced.

Cyber resilience does not begin when an incident is detected. It begins when an organization knows who has access to its infrastructure and can control that access at any time. Identity and access management is the first link in the cyber resilience chain.

This foundation is built through a mature Identity & Access Management (IAM) program that brings together authentication (MFA), authorization (RBAC and the Principle of Least Privilege), Identity Lifecycle Management, Just-in-Time Access, privileged account protection through PAM, and the principles of Zero Trust. Together, these capabilities reduce the attack surface and limit the spread of security incidents across the organization's infrastructure.

To understand how identities and access fit into a cyber resilience strategy, read the introductory article in the series: “Cyber resilience: why protection is no longer enough.”

90 Days of Enterprise-Grade Cyber Defense

Step into the future of cybersecurity with full access to a unified, intelligent platform — free for 90 days. Empower your security team with:

Advanced SIEM for real-time visibility, smart alerting, and deep forensics across cloud, on-prem, and hybrid environments
Continuous Vulnerability Management to identify, prioritize, and remediate risk across all assets
Live Cyber Threat Intelligence integrated directly into your workflows, with global insights and attacker profiling
AI-Powered Threat Detection that learns from your environment, explains alerts in plain language, and suggests next steps
Built-in Compliance Readiness for NIS2, GDPR, ISO 27001, and more, with automated reporting and audit tools

Whether you're managing a lean SOC or a full-scale enterprise security team, this platform gives you the tools to detect faster, respond smarter, and stay ahead of evolving threats — all without the complexity.

Experience enterprise-grade protection, streamlined workflows, and total control.

Your 90-day head start begins now.

Unlock Your 3-Month Free Trial