ProLog is a log-management system from ProLog AG that collects IT log data centrally, stores it and analyses it. It is aimed at organisations that must meet logging requirements under GDPR, ISO 27001 and NIS2, such as operators of critical infrastructure, public bodies, utilities and hospitals. According to the vendor, it gathers events from PCs, servers, networks and industrial systems, stores them encrypted and audit-proof, raises alerts on anomalies such as unusual logins, and provides prepared reports for audits. It is delivered as a pre-configured, hardened appliance that runs inside the customer's own infrastructure.
ProLog AG is headquartered in Pforzheim, Germany. According to the vendor, all log data stays on the appliance, with no cloud connection and no external access, and the system can run in isolated or air-gapped networks. For European organisations that want SIEM-style logging without sending event data to a cloud provider, this keeps data location and jurisdiction under their own control. ProLog presents itself under the "IT Security Made in Germany" label.