Identity, the new front line of cybersecurity

For a long time, cybersecurity rested on a simple idea: protect the network to protect the company.

The perimeter was fortified, segmented, and traffic was controlled.

But the perimeter no longer exists.

The cloud has broken architectures apart. Hybrid work has erased physical boundaries. SaaS applications have multiplied entry points. The company has become distributed, shifting and interconnected.

In this new environment, only one element remains stable: identity.

Every access, every transaction, every sensitive action depends on a credential recognised as legitimate. That is precisely why attackers have changed their target. Their priority is no longer to exploit a complex technical flaw. They try to pass themselves off as someone trusted.

Recent major cyberattacks clearly confirm this underlying trend. More and more verified identities are handed over by people inside the organisation (insiders).

A compromised identity offers discreet, credible and often extensive access. It makes it possible to bypass traditional barriers without immediately triggering an alert. In most major breaches, escalation starts there: an account, then a privilege, then an almost undetectable lateral movement.

The real battlefield is no longer the infrastructure, it is identity.

The invisible debt of organisations

In many companies, identity management has been built up in successive layers. Environments have evolved, applications have multiplied and usage has changed, without rethinking the management of rights and access in light of these changes.

Accounts remain after people leave. Privileges are never really reassessed. Temporary access becomes permanent. As the IT estate becomes hybrid, governance grows more complex.

This identity debt grows silently. Yet it is one of the main risk factors. The broader and more diffuse the rights, the greater the impact of a compromise.

The challenge is no longer purely technical. It affects business continuity, reputation and digital trust.

Moving beyond the perimeter reflex

The “fortress” model, which protects the outside to secure the inside, no longer matches how people actually work. Today, access depends on a credential and the context in which it is used, rather than on a location.

This calls for a change of posture.

It is no longer just about managing access, but about continuously verifying the legitimacy of an identity, the consistency of its behaviour and the appropriateness of its privileges. The Zero Trust principle reflects this shift: never assume, always verify.

This approach profoundly changes the way cybersecurity is conceived. It places identity at the centre of the defence architecture.

Towards proactive identity protection

Maturity now means anticipating rather than reacting. Too many organisations discover the scale of an incident once the compromise has already happened. The question then becomes: how can the identity attack surface be reduced upstream?

This requires a better understanding of the real exposure of accounts, detecting weak signals of impersonation and structurally limiting excessive privileges. This work is a global approach combining technology, governance and operations, well beyond any single tool.

This is the thinking behind the SASETY Identity Guard service, which takes an approach centred on the user and their identity as the anchor point of defence. The goal is to restore consistent, continuous visibility over what is now at the heart of risk, identities and their exposure, rather than adding yet another layer to an already complex stack.

SASETY Identity Guard

Several security components revolve around these identities: email, the identity provider (IdP), endpoint protection (EDR) and the network. Historically, these components often work independently. Each detects its own alerts and applies its own rules, often without sharing an overall view of risk.

Identity Guard's approach is to connect these components around a common reference: the risk level of the identity.

In practice, every interaction, login attempt, unusual behaviour or signal from email or the endpoint feeds an assessment engine. This engine assigns a graduated alert level, inspired by DEFCON levels. The higher the risk, the stronger the controls.

This can mean, for example, a request for stronger authentication, a temporary restriction of privileges or blocked access to certain sensitive resources.

This model introduces adaptive logic. Security is no longer static, it becomes contextual. It adjusts to the actual behaviour of the identity and the signals collected across the environment.

The benefit is twofold.

On the one hand, it becomes possible to react earlier in the attack chain, before a compromise turns into a major incident. On the other, controls are proportionate to the level of risk, avoiding excessive constraints when the context is healthy.

By placing identity at the centre and correlating signals from email, authentication, endpoints and the network, the goal is to turn a stack of tools into a coherent system, driven by the reality of risk.

In other words, it is no longer just about protecting technical components, but about protecting users and what they can do, in real time.

A strategic challenge for the years ahead

The industrialisation of attacks, amplified by artificial intelligence, adds to this pressure. Impersonation attempts are becoming more convincing, faster and harder to distinguish from legitimate activity.

In this context, continuing to think about cybersecurity solely in terms of infrastructure would be a misjudgement. Digital trust now depends on the ability to control and protect identities.

The question is no longer whether identity is critical.

It is whether it is truly considered the new strategic perimeter of defence.