Section: Protection of Information Assets
Explanation:
Outgoing traffic with an IP source address different than the IP range in the network is invalid, in most of the cases, it signals a DoS attack originated by an internal user or by a previously compromised internal machine; in both cases, applying this filter will stop the attack.

説明／参考資料：
Explanation:
削除されたはずの文書を含むバックアップファイルは、これらのファイルから復元される可能性があります。アクセス制御は特定の文書の発行責任を確立するのに役立つかもしれませんが、電子メールの証拠にはなりません。電子メールで伝達すべき内容に関するデータ分類基準が定められている場合もありますが、その方針を策定しただけでは、訴訟に必要な情報は得られません。

The best tool for detailed testing of a business application's data and configuration files is an audit analytics tool. An audit analytics tool is a software that helps auditors to analyze large sets of data and identify anomalies, trends, and patterns that are relevant to the audit objectives. An audit analytics tool can also provide audit evidence and support the auditor's professional judgment and conclusions.
Some of the benefits of using an audit analytics tool are:
It can improve the efficiency and effectiveness of the audit by reducing the time and effort required to perform manual tests and procedures.
It can enhance the quality and reliability of the audit by increasing the coverage and accuracy of the data analysis and testing.
It can enable the auditor to perform more complex and sophisticated tests and procedures that may not be possible or feasible with traditional methods.
It can help the auditor to discover new insights and risks that may not be apparent or detectable with traditional methods.
Some examples of audit analytics tools are:
IDEA: A data analysis software that allows auditors to import, analyze, and visualize data from various sources and formats. It also offers features such as sampling, stratification, gap analysis, duplicate detection, Benford's law, and regression analysis.1 ACL: A data analysis software that helps auditors to access, analyze, and report on data from various sources and formats. It also offers features such as sampling, stratification, gap analysis, duplicate detection, Benford' s law, regression analysis, and scripting.2 TeamMate Analytics: A data analysis software that integrates with Microsoft Excel and provides auditors with a range of tools and functions to perform data analysis and testing. It also offers features such as sampling, stratification, gap analysis, duplicate detection, Benford's law, regression analysis, and scripting.3