このドキュメントでは、Security Command Center の脅威の検出結果のタイプについて説明します。脅威の検出結果は、クラウド リソースで潜在的な脅威が検出されたときに、脅威検出機能によって生成されます。使用可能な脅威の検出結果の一覧については、脅威の検出結果のインデックスをご覧ください。
概要
Event Threat Detection は、監査ログを調べて、バックアップと DR サービス アプライアンスでのバックアップの有効期限が短縮されたかどうかを検出します。
顧客への対処方法
この検出結果に対応する手順は次のとおりです。
ステップ 1: 検出結果の詳細を確認する
検出結果の確認の説明に従って、Impact: Google Cloud Backup and DR reduced backup expiration の検出結果を開きます。検出結果の詳細パネルが開き、[概要] タブが表示されます。
[[["わかりやすい","easyToUnderstand","thumb-up"],["問題の解決に役立った","solvedMyProblem","thumb-up"],["その他","otherUp","thumb-up"]],[["わかりにくい","hardToUnderstand","thumb-down"],["情報またはサンプルコードが不正確","incorrectInformationOrSampleCode","thumb-down"],["必要な情報 / サンプルがない","missingTheInformationSamplesINeed","thumb-down"],["翻訳に関する問題","translationIssue","thumb-down"],["その他","otherDown","thumb-down"]],["最終更新日 2025-09-05 UTC。"],[],[],null,["| Premium and Enterprise [service tiers](/security-command-center/docs/service-tiers)\n\nThis document describes a threat finding type in Security Command Center. Threat findings are generated by\n[threat detectors](/security-command-center/docs/concepts-security-sources#threats) when they detect\na potential threat in your cloud resources. For a full list of available threat findings, see [Threat findings index](/security-command-center/docs/threat-findings-index).\n\nOverview\n\nEvent Threat Detection examines audit logs to detect whether the expiration date\nfor a backup on a Backup and DR Service appliance has been reduced.\n\nHow to respond\n\nTo respond to this finding, do the following:\n\nStep 1: Review finding details\n\n1. Open the `Impact: Google Cloud Backup and DR reduced backup expiration` finding, as detailed in [Reviewing findings](/security-command-center/docs/how-to-investigate-threats#reviewing_findings). The details panel for the finding opens to the **Summary** tab.\n2. On the **Summary** tab, review the information in the following sections:\n - **What was detected** , especially the following fields:\n - **Description**: information about the detection\n - **Principal subject**: a user or service account that has successfully executed an action\n - **Affected resource**\n - **Resource display name**: the project in which the backup's expiration was reduced.\n - **Related links** , especially the following fields:\n - **MITRE ATTACK method**: link to the MITRE ATT\\&CK documentation.\n - **Logging URI** : link to open the **Logs Explorer**.\n\nStep 2: Research attack and response methods\n\nContact the owner of the service account in the **Principal subject** field.\nConfirm whether the legitimate owner conducted the action.\n\nStep 3: Implement your response\n\n\nThe following response plan might be appropriate for this finding, but might also impact operations.\nCarefully evaluate the information you gather in your investigation to determine the best way to\nresolve findings.\n\n1. In the project where the action was taken, navigate to the management console.\n2. In the **App Manager** tab, find the affected application for which backup expiration was reduced and verify that the expiration was intended by the principal.\n3. To initiate a new backup of the application, select **Manage Backup Configurations** to create an on-demand backup or to schedule a new backup.\n\nWhat's next\n\n- Learn [how to work with threat\n findings in Security Command Center](/security-command-center/docs/how-to-investigate-threats).\n- Refer to the [Threat findings index](/security-command-center/docs/threat-findings-index).\n- Learn how to [review a\n finding](/security-command-center/docs/how-to-investigate-threats#reviewing_findings) through the Google Cloud console.\n- Learn about the [services that\n generate threat findings](/security-command-center/docs/concepts-security-sources#threats)."]]