Change log for CS_STREAM

Date	Changes
2026-02-19	Enhancement: - `event.idm.read_only_udm.security_result.rule_id`: Newly mapped `event_data.RuleId` log field with `event.idm.read_only_udm.security_result.rule_id` UDM field. - `event.idm.read_only_udm.security_result.rule_name`: Newly mapped `event_data.RuleName` log field with `event.idm.read_only_udm.security_result.rule_name` UDM field. - `event.idm.read_only_udm.security_result.rule_set`: Newly mapped `event_data.RuleTopic` log field with `event.idm.read_only_udm.security_result.rule_set` UDM field. - `event.idm.read_only_udm.target.resource.product_object_id`: Newly mapped `event_data.ItemId` log field with `event.idm.read_only_udm.target.resource.product_object_id` UDM field. - `event.idm.read_only_udm.security_result.detection_fields`: Newly mapped `event_data.HasNewlyDetectedCredentials` (key: `HasNewlyDetectedCredentials`), `event_data.NotificationId` (key: `NotificationId`), `event_data.MatchedTimestamp` (key: `MatchedTimestamp`) log fields with `event.idm.read_only_udm.security_result.detection_fields` UDM field. - `event.idm.read_only_udm.target.resource.attribute.labels`: Newly mapped `event_data.ItemPostedTimestamp` (key: `ItemPostedTimestamp`), `event_data.ItemType` (key: `ItemType`) log fields with `event.idm.read_only_udm.target.resource.attribute.labels` UDM field. - `event.idm.read_only_udm.security_result.severity`: - If `event_data_rulepriority` is `DEBUG`, `INFO`, `AUDIT`, updated the value of `event.idm.read_only_udm.security_result.severity` to `INFORMATIONAL`. - If `event_data_rulepriority` is `ERROR`, updated the value of `event.idm.read_only_udm.security_result.severity` to `ERROR`. - If `event_data_rulepriority` is `CRITICAL`, updated the value of `event.idm.read_only_udm.security_result.severity` to `CRITICAL`. - If `event_data_rulepriority` is `LOW`, updated the value of `event.idm.read_only_udm.security_result.severity` to `LOW`. - If `event_data_rulepriority` is `MEDIUM`, `WARN` updated the value of `event.idm.read_only_udm.security_result.severity` to `MEDIUM`. - If `event_data_rulepriority` is `HIGH`, updated the value of `event.idm.read_only_udm.security_result.severity` to `HIGH`.
2026-02-12	Enhancement: - `event.idm.read_only_udm.additional.fields`: Newly mapped `event_data.PatternDispositionFlags.Detect`, `event_data.PatternDispositionFlags.OperationBlocked`, `event_data.PatternDispositionFlags.QuarantineFile`, `event_data.PatternDispositionFlags.BootupSafeguardEnabled`, `event_data.PatternDispositionFlags.PolicyDisabled`, `event_data.PatternDispositionFlags.KillParent` and `event_data.PatternDispositionFlags.SuspendParent` raw log fields to `event.idm.read_only_udm.additional.fields` UDM field.
2026-02-10	Enhancement: - Refactored the logic to determine the value of `event.idm.read_only_udm.security_result.action` UDM field based on the following conditions: - Set to `QUARANTINE` if `event_data.PatternDispositionFlags.QuarantineFile` is `true`. - Set to `ALLOW` if `event_data.PatternDispositionFlags.OperationBlocked` is `false` AND `event_data.PatternDispositionFlags.PolicyDisabled` is `false`. - Set to `ALLOW` if `event_data.PatternDispositionFlags.OperationBlocked` is `true` AND `event_data.PatternDispositionFlags.PolicyDisabled` is `true`. - Set to `BLOCK` if `event_data.PatternDispositionFlags.OperationBlocked` is `true` AND `event_data.PatternDispositionFlags.PolicyDisabled` is `false`. - Otherwise, the value is set to `ALLOW`, `BLOCK`, `QUARANTINE`, or `ALLOW_WITH_MODIFICATION` based on specific values of the `event_data.PatternDispositionValue` field. - `event.idm.read_only_udm.additional.fields` : Newly mapped `event.PatternDispositionFlags.QuarantineMachine` raw log field to `event.idm.read_only_udm.additional.fields` UDM field.
2026-02-02	Enhancement: - `event.idm.read_only_udm.principal.process.pid`: Newly mapped `event_data.ProcessId` raw log field to `event.idm.read_only_udm.principal.process.pid`. - `event.idm.read_only_udm.principal.process.parent_process.pid`: Newly mapped `event_data.ParentProcessId` raw log field to `event.idm.read_only_udm.principal.process.parent_process.pid`. - `event.idm.read_only_udm.target.file.md5`: Newly mapped `event_data.MD5String` raw log field to `event.idm.read_only_udm.target.file.md5`. - `event.idm.read_only_udm.target.file.sha1`: Newly mapped `event_data.SHA1String` raw log field to `event.idm.read_only_udm.target.file.sha1`. - `event.idm.read_only_udm.principal.user.group_identifiers`: Newly mapped `event_data.LogonDomain` raw log field to `event.idm.read_only_udm.principal.user.group_identifiers`. - `event.idm.read_only_udm.principal.process.parent_process.file.names`: Newly mapped `event_data.ParentImageFileName` raw log field to `event.idm.read_only_udm.principal.process.parent_process.file.names`. - `event.idm.read_only_udm.principal.process.parent_process.command_line`: Newly mapped `event_data.ParentCommandLine` raw log field to `event.idm.read_only_udm.principal.process.parent_process.command_line`. - `event.idm.read_only_udm.about`: Newly mapped `event_data.AssociatedFile` raw log field to `event.idm.read_only_udm.about`. - `event.idm.read_only_udm.principal.process.parent_process.file.full_path`: Newly mapped `event_data.ParentImageFilePath` raw log field to `event.idm.read_only_udm.principal.process.parent_process.file.full_path`. - `event.idm.read_only_udm.security_result.risk_score`: Newly mapped `event_data.RiskScore` raw log field to `event.idm.read_only_udm.security_result.risk_score`. - `event.idm.read_only_udm.target.file.names`: Newly mapped `event_data.FilesAccessed.FileName`, `event_data.FilesWritten.FileName` raw log fields to `event.idm.read_only_udm.target.file.names`. - `event.idm.read_only_udm.additional.fields`: Newly mapped `event_data.FilesAccessed.Timestamp`, `event_data.FilesAccessed.FilePath`, `event_data.FilesWritten.Timestamp`, `event_data.FilesWritten.FilePath`, `event_data.DnsRequests.InterfaceIndex`, `event_data.DnsRequests.LoadTime`, `event_data.DnsRequests.DomainName`, `event_data.DnsRequests.RequestType`, `event_data.PatternDispositionFlags.Detect`, `event_data.PatternDispositionFlags.Indicator`, `event_data.PatternDispositionFlags.InddetMask`, `event_data.PatternDispositionFlags.SensorOnly`, `event_data.PatternDispositionFlags.Rooting`, `event_data.PatternDispositionFlags.KillSubProcess`, `event_data.PatternDispositionFlags.ProcessBlocked`, `event_data.PatternDispositionFlags.RegistryOperationBlocked`, `event_data.PatternDispositionFlags.CriticalProcessDisabled`, `event_data.PatternDispositionFlags.BootupSafeguardEnabled`, `event_data.PatternDispositionFlags.FsOperationBlocked`, `event_data.PatternDispositionFlags.HandleOperationDowngraded`, `event_data.PatternDispositionFlags.KillActionFailed`, `event_data.PatternDispositionFlags.BlockingUnsupportedOrDisabled`, `event_data.PatternDispositionFlags.ContainmentFileSystem`, `event_data.ProcessStartTime`, `event_data.ProcessEndTime`, `event_data.GrandParentImageFileName`, `event_data.GrandParentCommandLine`, `event_data.AggregateId`, `event_data.GrandParentImageFilePath`, `event_data.PlatformId`, `event_data.CloudIndicator` raw log fields to `event.idm.read_only_udm.additional.fields`. - Updated the replace mutation for `event.idm.read_only_udm.target.file.sha256` to use `%{event_data.IOCValue}` for correct variable interpolation.
2025-11-27	Enhancement: - event.idm.read_only_udm.metadata.product_event_type: Newly mapped `event_data_simpleName` raw log field with event.idm.read_only_udm.metadata.product_event_type UDM field. - event.idm.read_only_udm.principal.hostname: Newly mapped `ComputerName` raw log field with event.idm.read_only_udm.principal.hostname UDM field. - event.idm.read_only_udm.principal.asset.hostname: Newly mapped `ComputerName` raw log field with event.idm.read_only_udm.principal.asset.hostname UDM field. - event.idm.read_only_udm.principal.ip: Newly mapped `LocalAddressIP4`, `aip` raw log field with event.idm.read_only_udm.principal.ip UDM field. - event.idm.read_only_udm.principal.asset.ip: Newly mapped `LocalAddressIP4`, `aip` raw log field with event.idm.read_only_udm.principal.asset.ip UDM field. - event.idm.read_only_udm.principal.asset.asset_id: Newly mapped `aid` raw log field with event.idm.read_only_udm.principal.asset.asset_id UDM field. - event.idm.read_only_udm.target.file.full_path: Newly mapped `TargetFileName` raw log field with event.idm.read_only_udm.target.file.full_path UDM field. - event.idm.read_only_udm.principal.platform: Newly mapped `event_data_platform` raw log field with event.idm.read_only_udm.principal.platform UDM field. - event.idm.read_only_udm.metadata.product_log_id: Newly mapped `id` raw log field with event.idm.read_only_udm.metadata.product_log_id UDM field. - event.idm.read_only_udm.metadata.product_deployment_id: Newly mapped `cid` raw log field with event.idm.read_only_udm.metadata.product_deployment_id UDM field. - event.idm.read_only_udm.target.file.size: Newly mapped `Size` raw log field with event.idm.read_only_udm.target.file.size UDM field. - event.idm.read_only_udm.metadata.description: Newly mapped `name` raw log field with event.idm.read_only_udm.metadata.description UDM field. - event.idm.read_only_udm.additional.fields: Newly mapped `ExtendedAttributeName`, `ConfigStateHash`, `ContextProcessId`, `ExtendedAttributeStatus`, `ExtendedAttributeValueReadable`, `FileIdentifier`, `ConfigBuild`, `ExtendedAttributeModificationType`, `Entitlements`, `EventOrigin`, `VnodeType`, `EffectiveTransmissionClass` raw log fields with event.idm.read_only_udm.additional.fields UDM field.
2025-10-02	Enhancement: - Newly added for loop for `event_data.MitreAttack` raw log field to handle multiple values. - `event.idm.read_only_udm.principal.hostname` and `event.idm.read_only_udm.principal.asset.hostname`: Newly mapped `event_data.ComputerName` raw log field with `event.idm.read_only_udm.principal.hostname` and `event.idm.read_only_udm.principal.asset.hostname` UDM fields. - `event.idm.read_only_udm.principal.asset_id` and `event.idm.read_only_udm.principal.asset.asset_id`: Newly mapped `event_data.SensorId` raw log field with `event.idm.read_only_udm.principal.asset_id` and `event.idm.read_only_udm.principal.asset.asset_id` UDM field. - `event.idm.read_only_udm.additional.fields`: Newly mapped `event_data.MobileDetectionId`, `event_data.ContextTimeStamp` raw log field with `event.idm.read_only_udm.additional.fields` UDM field. - `event.idm.read_only_udm.security_result.detection_fields`: Newly mapped `event_data.TacticId`, `value.TacticID`, `value.TechniqueID`, `value.FingerPrint`, `value.Name`, `value.PatternID` raw log field with `event.idm.read_only_udm.security_result.detection_fields` UDM field. - `event.idm.read_only_udm.network.tls.server.certificate.issuer`: Newly mapped `value.Issuer` raw log field with `event.idm.read_only_udm.network.tls.server.certificate.issuer` UDM field.
2025-08-08	Enhancement: - event.idm.read_only_udm.principal.hostname and event.idm.read_only_udm.principal.asset.hostname: Newly mapped `endpointName` raw log field with `event.idm.read_only_udm.principal.hostname` and `event.idm.read_only_udm.principal.asset.hostname` UDM fields. - event.idm.read_only_udm.principal.ip and event.idm.read_only_udm.principal.asset.ip: Newly mapped `ClientIP` raw log field with `event.idm.read_only_udm.principal.ip` and `event.idm.read_only_udm.principal.asset.ip` UDM fields. - event.idm.read_only_udm.metadata.event_type: Setting `event.idm.read_only_udm.metadata.event_type` to `STATUS_UPDATE` when `has_principal` is `true`. - event.idm.read_only_udm.security_result.detection_fields: Removed mapping of `endpointName` from `event.idm.read_only_udm.security_result.detection_fields` UDM fields.
2025-07-28	Enhancement: - event.idm.read_only_udm.metadata.vendor_name: Newly mapped a default value "CrowdStrike" when vendor is empty. - event.idm.read_only_udm.metadata.product_name: Newly mapped a default value "FalconHost" when product is empty. - event.idm.read_only_udm.principal.hostname: Newly mapped `event_data.HostnameField` raw log field to `event.idm.read_only_udm.principal.hostname` UDM field. - event.idm.read_only_udm.principal.asset.hostname: Newly mapped `event_data.HostnameField` raw log field to `event.idm.read_only_udm.principal.asset.hostname` UDM field. - event.idm.read_only_udm.network.session_id: Newly mapped `event_data.SessionId` raw log field to `event.idm.read_only_udm.network.session_id` UDM field. - event.idm.read_only_udm.principal.asset.asset_id: Newly mapped `event_data.AgentIdString` raw log field to `event.idm.read_only_udm.principal.asset.asset_id` UDM field with a prefix "Asset_ID: ". - event.idm.read_only_udm.metadata.url_back_to_product: Newly mapped `url` raw log field to `event.idm.read_only_udm.metadata.url_back_to_product` UDM field. - event.idm.read_only_udm.network.http.response_code: Newly mapped `event_data.Attributes.status_code` raw log field to `event.idm.read_only_udm.network.http.response_code` UDM field. - event.idm.read_only_udm.network.http.method: Newly mapped `event_data.Attributes.request_method` raw log field to `event.idm.read_only_udm.network.http.method` UDM field. - event.idm.read_only_udm.network.http.user_agent: Newly mapped `event_data.Attributes.user_agent` raw log field to `event.idm.read_only_udm.network.http.user_agent` UDM field. - event.idm.read_only_udm.target.application: Newly mapped `event_data.Source` raw log field to `event.idm.read_only_udm.target.application` UDM field. - event.idm.read_only_udm.security_result.detection_fields: Removed mapping of `meta.version` from `event.idm.read_only_udm.security_result.detection_fields` UDM field. - event.idm.read_only_udm.metadata.product_version: Mapped `meta.version` raw log field with `event.idm.read_only_udm.metadata.product_version` UDM field - event.idm.read_only_udm.target.url: Newly mapped `event_data.Attributes.request_path` raw log field to `event.idm.read_only_udm.target.url` UDM field. - event.idm.read_only_udm.metadata.event_type: If event_type is STATUS_UPDATE and has_principal == "true" and event_data.Attributes.scopes =~ "read", updated to USER_RESOURCE_ACCESS. - Added a drop filter TAG_MALFORMED_MESSAGE for logs that are neither valid JSON nor match the LEEF grok pattern. - event.idm.read_only_udm.security_result.detection_fields: Newly mapped `objective` and `outcome` raw log field(s) with event.idm.read_only_udm.security_result.detection_fields UDM field. - event.idm.read_only_udm.additional.fields: Newly mapped `EndTimestamp`, `event_data.UTCTimestamp` and `event_data.Commands` raw log field(s) with `event.idm.read_only_udm.additional.fields` UDM field. - Removed redundant mapping of `event.idm.read_only_udm.additional.fields` and `event.idm.read_only_udm.security_result.detection_fields` UDM field.
2025-07-23	Enhancement: - `event.idm.read_only_udm.principal.platform`: Newly mapped `event_data.PlatformName` raw log field to `event.idm.read_only_udm.principal.platform`. - `event.idm.read_only_udm.security_result.description`: Newly mapped `event_data.PatternDispositionDescription` raw log field to `event.idm.read_only_udm.security_result.description`. - `event.idm.read_only_udm.security_result.action`: Newly mapped `event_data.PatternDispositionFlags.QuarantineFile` raw log field to `event.idm.read_only_udm.security_result.action` when `event_data.PatternDispositionFlags.QuarantineFile` is `true`. - `event.idm.read_only_udm.security_result.detection_fields`: Newly mapped `event_data.PatternDispositionValue`,`event_data.PatternDispositionFlags.SuspendProcess` , and `event_data.PatternDispositionFlags.KillProcess` raw log fields with `event.idm.read_only_udm.security_result.detection_fields` UDM field. - Corrected the mapping of event_data.PatternId to the event.idm.read_only_udm.security_result.detection_fields UDM field to handle cases where it has a string value.
2025-07-03	Enhancement: - `event.idm.read_only_udm.metadata.event_type`: Set `event.idm.read_only_udm.metadata.event_type` to `SCAN_FILE` when `has_principal` is `true` and `has_target_file` is `true`. - `event.idm.read_only_udm.metadata.event_type`: Set `event.idm.read_only_udm.metadata.event_type` to `SCAN_UNCATEGORIZED` when `has_principal` is `false` and `description` raw log field is not related to user.
2025-03-12	Enhancement: - Removed the mapping of "deviceId" from "principal.asset.asset_id". - Added the mapping of "deviceId" to "additional.fields". - Mapped "connectionDirection" to "additional.fields".
2025-02-14	Enhancement: - Mapped "md5" to "target.process.file.md5". - Mapped "ipv4Addresses" to "principal.ip" and "principal.asset.ip". - Mapped "domainNames" to "additional.fields.value.list_value.values". - Mapped "exeWrittenFilePath" to "principal.process.file.full_path". - Mapped "sev" to "security_result.severity". - Mapped "exeWrittenFileName" and "fileName" to "target.file.names". - Mapped "patternDisposition" and "objective" to "security_result.detection_fields".
2025-02-12	Enhancement: - If "event_data.SeverityName" is between 0 and 19 (inclusive), then "security_result.severity" is mapped to "INFORMATIONAL". - If "event_data.SeverityName" is between 20 and 39 (inclusive), then "security_result.severity" is mapped to "LOW". - If "event_data.SeverityName" is between 40 and 59 (inclusive), then "security_result.severity" is mapped to "MEDIUM". - If "event_data.SeverityName" is between 60 and 79 (inclusive), then "security_result.severity" is mapped to "HIGH". - If "event_data.SeverityName" is between 80 and 99 (inclusive), then "security_result.severity" is mapped to "CRITICAL".
2025-02-10	Bug-fix: - Added Grok patterns to parse "event_data.IOCValue". - Mapped "NetworkAccesse.LocalAddress" to "principal.ip" and "principal.asset.ip". - Mapped "NetworkAccesse.LocalPort" to "principal.port". - Mapped "NetworkAccesse.ConnectionDirection" to "network.direction". - Mapped "NetworkAccesse.Protocol" to "network.ip_protocol". - Mapped "NetworkAccesse.RemoteAddress" to "principal.ip" and "principal.asset.ip". - Mapped "NetworkAccesse.RemotePort" to "target.port". - Mapped "NetworkAccesse.AccessType" to "additional.fields". - Mapped "NetworkAccesse.IsIPV6" to "security_result.detection_fields". - Mapped "NetworkAccesse.AccessTimestamp" to "security_result.detection_fields".
2025-02-02	Enhancement: - Added support for LEEF logs.
2025-01-28	Enhancement: - Added support to map "eventData.severityName" only if it is not empty.
2025-01-10	Enhancement: - When "OperationBlocked" is "true", mapped "security_result.action" to "BLOCK". - When "OperationBlocked" is "false", mapped "security_result.action" to "ALLOW". - When "event_type" is "IdentityProtectionEvent", then mapped "event_data.IncidentDescription" to "security_result.summary". - When "event_type" is "IdentityProtectionEvent", then mapped "event_data.SeverityName" to "security_result.severity".
2025-01-09	Enhancement: - Mapped "event_data.Technique" to "security_result.rule_name". - Mapped "event_data.CommandLine" to "target.process.command_line". - If "event_data.IOCType" is "ipv4", then mapped "event_data.IOCValue" to "target.ip" and "target.asset.ip". - If "event_data.IOCType" is "hash_sha256", then mapped "event_data.IOCValue" to "target.file.sha256".
2024-12-12	Enhancement: - Mapped "event.SeverityName" to "security_result.severity". - Mapped "event.Description" to "security_result.summary". - Mapped "security_result.action" based on "event.PatternDispositionFlags.OperationBlocked".
2024-10-29	Enhancement: - Added support for JSON format of logs. - Mapped "request" to "network.http.referral_url". - Mapped "networkDetectionType" to "security_result.detection_fields".
2022-07-18	Enhancement: - Added following mapping for the LEEF format logs: - The field "version" mapped to "metadata.product_version". - The field "usrName" and "userName" to "principal.user.email_addresses" if it is an email else mapped to "principal.user.userid". - The field "severityName" mapped to "security_result.severity". - The field "cat" mapped to "security_result.category_details". - The field "incidentType" mapped to "security_result.summary". - The field "falconHostLink" mapped to "security_result.about.url". - The field "numberOfCompromisedEntities" mapped to "security_result.detection_fields[n]". - The field "identityProtectionIncidentId" mapped to "security_result.detection_fields[n]". - The field "numbersOfAlerts" mapped to "security_result.detection_fields[n]". - The field "state" mapped to "security_result.detection_fields[n]". - Added following mapping for the CEF format logs: - The field "version" mapped to "metadata.product_version". - The field "deviceCustomDate1" mapped to "metadata.event_type". - The field "msg" mapped to "metadata.description". - The field "cs1" mapped to "security_result.summary" if the value of "cs1Label" is "incidentType" else mapped to "security_result.detection_fields[n]". - The field "cs2" mapped to "security_result.detection_fields[n]". - The field "cs3" mapped to "security_result.detection_fields[n]". - The field "cs1" mapped to "security_result.about.url" if the value of "cs4Label" is "falconHostLink" else mapped to "security_result.detection_fields[n]". - The field "cn1" mapped to "security_result.detection_fields[n]". - The field "cn2" mapped to "security_result.detection_fields[n]". - The field "cn3" mapped to "security_result.detection_fields[n]". - The field "duser" to "principal.user.email_addresses" if it is an email else mapped to "principal.user.userid".