DefinitionA SOC (Security Operations Center) is the combination of people, processes and technology that continuously monitors an organization's environment to detect, investigate and respond to security threats and incidents, usually on a 24/7 basis.
How it works
A SOC receives events from firewalls, endpoints, servers, cloud, identity and applications, correlates that data and decides what deserves attention. In NIST CSF 2.0 terms, it concentrates the work of the Detect and Respond functions. The typical cycle involves:
- Collection and correlation of events, usually in a SIEM or an XDR platform.
- Triage to separate noise from suspicious activity.
- Investigation to understand what happened, on which assets and with what scope.
- Response: containing, engaging the right people and following up until closure.
- Continuous improvement of detection rules based on every incident and false positive.
Why it matters
Attacks do not keep business hours. A critical event seen only the next day has had time to become an incident, and the longer the gap between the start of an attack and its containment, the greater the impact. That is why SOC quality is measured by indicators such as MTTD and MTTR, not by the number of alerts generated.
SOC vs SIEM vs MDR
SIEM is a tool: it collects and correlates events. The SOC is the operation that uses this and other tools, with analysts, processes and shifts. MDR is a service model in which the provider not only monitors but also investigates and takes response actions on the customer's behalf. A SOC can be in-house, outsourced or hybrid; a modern SOC usually adds automation, threat hunting and threat intelligence.
Network Secure runs a 24/7 SOC certified to ISO/IEC 27001:2022.
Frequently asked questions
Is having a SIEM the same as having a SOC?
No. SIEM is the tool that collects and correlates events; the SOC is the team, processes and continuous operation that turn those events into detection and response.
Is an in-house or outsourced SOC better?
It depends on size and maturity. Staffing 24/7 shifts with specialists is expensive and hard, so many companies outsource the SOC or adopt a hybrid model with their internal team.