July 2026 Summaries

AWS VPC Flow Logs are crucial for understanding security incidents, as they provide essential network-level visibility to reconstruct events and identify suspicious communication patterns. However, as cloud environments grow, retaining these logs in traditional SIEM systems becomes costly, often forcing organizations to make difficult decisions about data retention and log filtering, which may hinder their security investigations. To address this, security data lake architectures, like Imply Lumi, offer a solution by separating storage from investigation capabilities, allowing high-volume datasets like VPC Flow Logs to remain in cost-effective object storage while remaining searchable with familiar tools such as Splunk, Grafana, and Databricks. Lumi simplifies the process by automatically ingesting, parsing, and enriching logs without requiring data movement into proprietary storage, thus preserving existing workflows and reducing storage costs. This approach allows organizations to maintain comprehensive security logs without compromising on budget, ensuring that valuable data is readily available for investigations.