SIEM
Security Information and Event Management
SIEM (Security Information and Event Management) is a technology that collects, aggregates, and correlates log and event data from across an organisation's systems in real time. By analysing this data against known threat patterns, SIEM helps security teams detect suspicious activity, investigate incidents, and meet compliance requirements through centralised monitoring and reporting.
A SIEM ingests logs from sources such as firewalls, servers, endpoints, applications, and cloud services. It normalises that data, applies correlation rules and increasingly machine learning, and raises alerts when patterns match known attack behaviour — turning millions of raw events into a manageable stream of actionable signals.
SIEM is the analytical backbone of most Security Operations Centers. Beyond detection, it provides the centralised log retention, dashboards, and reporting that auditors expect for frameworks like ISO 27001, PCI DSS, and SOC 2.