Change log for IMPERVA_CEF

Date Changes
2026-06-17 Enhancement:
- event.idm.read_only_udm.target.hostname and event.idm.read_only_udm.target.asset.hostname: Mapped target_host log field with event.idm.read_only_udm.target.hostname and event.idm.read_only_udm.target.asset.hostname UDM fields for all events.
- event.idm.read_only_udm.metadata.collected_timestamp: Newly mapped end raw log field with event.idm.read_only_udm.metadata.collected_timestamp UDM field.
2026-05-21 Enhancement:
- event.idm.read_only_udm.security_result.action_details: Newly mapped kv.act raw log field with event.idm.read_only_udm.security_result.action_details UDM field.
- Added a grok pattern on kv.request to extract target_host.
- event.idm.read_only_udm.target.hostname and event.idm.read_only_udm.target.asset.hostname: Newly mapped target_host log field with event.idm.read_only_udm.target.hostname and event.idm.read_only_udm.target.asset.hostname UDM field if log event is Illegal Resource Access.
- event.idm.read_only_udm.target.resource.name: Newly mapped kv.sourceServiceName raw log field with event.idm.read_only_udm.target.resource.name UDM field.
2026-04-30 Enhancement:
- event.idm.read_only_udm.metadata.description: Newly mapped organization log field with event.idm.read_only_udm.metadata.description UDM field.
- event.idm.read_only_udm.metadata.product_log_id: Newly mapped log_type log field with event.idm.read_only_udm.metadata.product_log_id UDM field.
- event.idm.read_only_udm.principal.location.city: Newly mapped cicode raw log field with event.idm.read_only_udm.principal.location.city UDM field.
- event.idm.read_only_udm.principal.location.country_or_region: Newly mapped ccode raw log field with event.idm.read_only_udm.principal.location.country_or_region UDM field.
- event.idm.read_only_udm.network.organization_name: Newly mapped Customer raw log field with event.idm.read_only_udm.network.organization_name UDM field.
- event.idm.read_only_udm.network.tls.version: Newly mapped tls_version log field with event.idm.read_only_udm.network.tls.version UDM field.
- event.idm.read_only_udm.network.tls.cipher: Newly mapped tls_cipher raw log field with event.idm.read_only_udm.network.tls.cipher UDM field.
- event.idm.read_only_udm.target.port: Newly mapped cpt raw log field with event.idm.read_only_udm.target.port UDM field.
- event.idm.read_only_udm.target.resource.product_object_id: Newly mapped fileId raw log field with event.idm.read_only_udm.target.resource.product_object_id UDM field.
- event.idm.read_only_udm.security_result.category_details: Newly mapped dproc raw log field with event.idm.read_only_udm.security_result.category_details UDM field.
- event.idm.read_only_udm.security_result.threat_id: Newly mapped severity log field with event.idm.read_only_udm.security_result.threat_id UDM field.
- event.idm.read_only_udm.security_result.detection_fields: Newly mapped deviceFacility, deviceExternalId raw log fields with event.idm.read_only_udm.security_result.detection_fields UDM field.
- event.idm.read_only_udm.metadata.collected_timestamp: Newly mapped end raw log field with event.idm.read_only_udm.metadata.collected_timestamp UDM field.
- Added a grok pattern on ver to extract tls_version, tls_cipher.
2024-09-12 Enhancement:
- Added support for new log patterns.
2023-03-07 Newly created parser.