Accura also integrates a fourth-generation OT SIEM (Security Information and Event Management) system that centralizes records from various OT devices and technologies and analyzes them to identify attack patterns and ensure rapid response to incidents. Together, these solutions ensure proactive protection and improve the overall cyber resilience of critical infrastructure.

How OT SIEM Complements OT IDS

• Intrusion detection systems (IDS) collect asset information using passive network monitoring and active query. IDS are primarily reactive, monitoring network events that provide limited visibility of assets in the OT environment. IDS products are isolated from other security solutions because they work mainly on the network layer.

• IDS cannot correlate logs from security technologies and OT devices, whereas OT SIEM is a platform that collects, analyzes and correlates data from various sources (including OT IDS, firewalls, logs from various devices and other security sensors) in real time.
• OT SIEM enables centralized monitoring and provides a comprehensive overview of security events and the state of the OT infrastructure. It can not only detect attacks, but also provide context (for example, show how the attack took place, what devices were affected, what vulnerabilities were exploited). It can include automated incident responses (e.g. isolation of compromised equipment) and integrates with other security systems for effective incident management.
• OT SIEM provides a more comprehensive view by aggregating and analyzing data from various sources (including IDS) to provide broader context and centralized management of security events. OT IDS is specifically aimed at detecting intrusions and malicious activities in OT networks at the network and device level.

How does OT SIEM work?

OT SIEM Architecture