September 2025
Intermediate
544 pages
19h 22m
Japanese
Content preview from マルチクラウドセキュリティの教科書 クラウド横断で実現する堅牢なセキュリティ基盤
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Chapter 6 クラウドセキュリティオペレーション
400
6-3-4 フォレンジックの 実 践
フォレンジックとは、セキュリティインシデントの発生時に端末やネットワーク内の情報を収集し、影響範囲や犯罪捜
査に必要な法的証拠を収集・分析する取り組みです。フォレンジックの第一歩は、関連するログデータを迅速かつ完全に
収集することです。このとき、ログ収集用のアカウントを用意し、他の業務アカウントと分離することで調査対象のデー
タの改ざんリスクを低減することが望ましいです。ログを適切に分析するためには、必要なログやフォーマットを検討す
る必要があります。各クラウドプロバイダーにはフォレンジックに活用できるログ保存機能が提供されているので、それ
らの機能を活用し要件を満たす形式でデータを保持します。
ログの保存と分析例
AWS S
3 バケットに
CloudTrail
ログを保存し、
Athena
でクエリを実行
Azure Log Analytics Workspace
にログを保存し、
Sentinel
で分析
Google Cloud BigQuery
にログを保存し、
SQL
クエリで分析
OCI Object Storage
にログを保存し、
Logging Analytics
で調査
セキュリティインシデントの発生時には、時系列にログを分析してインシデントの原因や進行を特定します。とくに、
攻撃者が利用したエントリポイントや拡散手法を特定することが重要です。また、
SIEMと併用することでフォレンジッ
クの精度を向上させるツールも多く存在します。 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.