How do SIEM and SOC work in practice?

The SIEM ingests logs from networks, identities and applications, correlates them and generates alerts. The SOC, operating 24/7, triages those alerts, investigates the relevant ones and coordinates incident containment according to defined procedures.

What does DORA require here?

DORA obliges financial institutions to detect and manage ICT incidents and to report them within set timeframes. Having detection and response capabilities such as a SIEM operated by a SOC is a common means of meeting those requirements in a demonstrable way.

Glossary · Cybersecurity · Detection and response

SIEM and SOC: incident detection and response

Q: What are a SIEM and a SOC?

A SIEM is the platform that collects and correlates security events from an organisation's systems. A SOC is the team that operates that platform continuously to detect, investigate and respond to incidents. The SIEM provides the technology and the SOC the operation.

A SIEM (Security Information and Event Management) collects and correlates events from multiple systems to detect anomalous patterns. A SOC (Security Operations Center) is the team that operates that platform continuously, around the clock, to investigate and respond to alerts. Technology without operation does not detect; operation needs the technology to scale.

How they complement each other

SIEM — aggregates logs from networks, applications and identities, and correlates events to generate alerts prioritised by risk.
SOC — a team of analysts that monitors, investigates and contains incidents without interruption, relying on the SIEM and defined procedures.
24/7 operation — continuous coverage reduces detection and response time, a decisive factor in limiting the impact of an incident.
Detection and response — the combination covers the full cycle: visibility, correlation, triage, containment and incident logging.

Why it matters in regulated banking

DORA requires financial institutions to detect, manage and report ICT incidents within defined timeframes. That capability is not viable without continuous monitoring and event correlation: a SIEM operated by a SOC provides the early detection and traceability the supervisor expects, along with the records needed to meet reporting obligations. NIS2 reinforces the same requirement for detection and response capabilities in essential sectors.

How Vermont Solutions helps

Demonstrable detection and response

We support financial institutions in designing their detection and response capabilities, aligning SIEM and SOC with DORA's incident management obligations.

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Fuentes

ENISA — the EU Agency for Cybersecurity

Last updated: 2026-06-21. Editorial content by Vermont Solutions, citable with attribution.