According to the web search results, a data management policy for cloud-based file storage should include a requirement to scan approved cloud-based apps for inappropriate content. This can help to prevent data leakage, compliance violations, and reputational damage. For example, one of the results1 describes how to use Microsoft Defender for Cloud Apps to create file policies that can monitor and control the data and files in your organization's cloud app use, and apply automated actions for governance and remediation. Another result2 explains how to use Google Cloud Storage's Bucket Lock feature to set a data retention policy for a bucket that governs how long objects in the bucket must be retained, and how to lock the policy to prevent it from being reduced or removed. A third result3 outlines the best practices and approval processes for using cloud computing services at Tufts University, and states that "the university reserves the right to scan any cloud computing service used by Tufts faculty, staff, or students for inappropriate content". References := File policies - Microsoft Defender for Cloud Apps Retention policies and retention policy locks | Cloud Storage | Google Cloud Cloud Computing Services Policy | Technology Services - Tufts University