Recommendation
High-value events at high volume detected through aggregation or jobs, or high-value context used mainly in investigations.
Retention is set per table, so the retention for this source is advisory.
How the matrix worksC5 Network activity
Network activity: firewall, DNS, DHCP, web proxy, flow, load balancer, mail gateway and message flow, web access to internet-facing services
T3 High-volume aggregation
Primary, high or very-high volume, and the generic detection use is aggregation, threat-intelligence matching, baselining, or investigation.
Rows that belong to this source
ProcessName =~ "cisco_wsa"Rules query these rows through the CiscoWSAEvent parser.
Sources for this recommendation
- Azure-Sentinel public content corpus Table identity and usage evidence from public analytics rules, hunting queries, parsers, and solution content. Classification, tier, retention, and billing recommendations require human review.
- Log Baseline classification rules Value rules C1-C9 mapped to ASD and CISA guidance, and tier rules T1-T5 including plan support. Stored per table as valueRule and tierRule.
- Log Baseline volume model Judgment-based volume driver and relative volume class per table. Not measured tenant volume.
- ASD ACSC Priority logs for SIEM ingestion: Practitioner guidance Loosely prioritized log categories (EDR, network devices, domain controllers, Windows, virtualisation, cloud, containers, databases, MDM, DNS, Linux, macOS) used by the classification rules. Collection priority, not storage tier.
- CISA Guidance for Implementing M-21-31 Prioritized event types for collection and storage (ICAM, operating systems, network infrastructure, cloud, AWS, Azure, Microsoft 365, GCP) used by the classification rules. Collection priority, not storage tier.