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
既知の匿名化 IP アドレスからデータベース インスタンスへのログインが失敗しました。これらの匿名化アドレスは Tor ノードです。これは、攻撃者がインスタンスへの不正アクセスを試みていることを示している可能性があります。
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、Credential Access: CloudDB Failed login from Anonymizing Proxy IP の検出結果を開きます。
[[["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\nA failed login occurred in a database instance from a known anonymizing IP\naddress. These anonymizing addresses are Tor nodes. This could indicate an\nattacker attempting unauthorized access to your instance.\n\nHow to respond\n\nTo respond to this finding, do the following:\n\nStep 1: Review finding details\n\n1. Open an `Credential Access: CloudDB Failed login from Anonymizing Proxy IP` finding, as directed in [Reviewing findings](/security-command-center/docs/how-to-investigate-threats#reviewing_findings).\n2. On the **Summary** tab of the finding details panel, review the\n information in the following sections:\n\n - **What was detected**, especially the following fields:\n - **Indicator IP address**, the anonymizing ip address.\n - **Database display name**: the name of the database in the Cloud SQL PostgreSQL, MySQL or AlloyDB instance that was affected.\n - **Database user name**: the user.\n - **Project full name**: the Google Cloud project that contains the Cloud SQL instance.\n\nStep 2: Research attack and response methods\n\n1. Review the MITRE ATT\\&CK framework entry for this finding type: [Credential Access](https://attack.mitre.org/techniques/T1110/).\n2. To determine if additional remediation steps are necessary, combine your investigation results with MITRE research.\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\n- Review the users allowed to connect to the database.\n\n - For PostgreSQL, see [Create and manage users](/sql/docs/postgres/create-manage-users)\n - For MySQL, see [Manage users with built-in authentication](/sql/docs/mysql/create-manage-users)\n- Consider changing the password for the user.\n\n - For PostgreSQL, see [Set the password for the default user](/sql/docs/postgres/create-manage-users#user-root)\n - For MySQL, see\n [Set the password for the default user](/sql/docs/mysql/create-manage-users#user-root)\n\n - Update the credentials for the clients that connect to the Cloud SQL instance\n\n- Review network access to you instance\n\n - For PostgreSQL, see [Set the password for the default user](/sql/docs/postgres/create-manage-users#user-root)\n - For MySQL, see [Set the password for the default user](/sql/docs/mysql/create-manage-users#user-root)\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)."]]
