Rapid7 InsightIDR

Rapid7 InsightIDR is a cloud-native SIEM that is highly praised in 2026 for its 'Asset-Based Pricing,' which allows for unlimited data ingestion without the traditional cost spikes of volume-based models. It features built-in User and Entity Behavior Analytics (UEBA) that automatically spots lateral movement and compromised accounts. InsightIDR is designed to be deployed quickly, with hundreds of pre-built detections and a direct integration with Rapid7’s managed detection and response (MDR) services.