Ensure Safe Attachments for SharePoint, OneDrive, and Microsoft Teams is Enabled

低レベル 2手動レビューm365

説明

Safe Attachments for SharePoint, OneDrive, and Microsoft Teams scans these services for malicious files. Safe Attachments for SharePoint, OneDrive, and Microsoft Teams protect organizations from inadvertently sharing malicious files. When a malicious file is detected that file is blocked so that no one can open, copy, move, or share it until further actions are taken by the organization's security team.

チェック方法

監査方法: 手動レビュー

この推奨事項は自動ではチェックできません。--include-manual を指定すると、スキャン結果にこの手順付きで一覧表示されます。

To audit using the UI: 1. Navigate to Microsoft Defender https://security.microsoft.com. 2. Under Email & collaboration select Policies & rules. 3. Select Threat policies then Safe Attachments. 4. Click on Global settings. 5. Verify that the Turn on Defender for Office 365 for SharePoint, OneDrive, and Microsoft Teams toggle is set to Enabled. 6. Verify that the Turn on Safe Documents for Office clients toggle is set to Enabled. 7. Verify that the Allow people to click through Protected View even if Safe Documents identified the file as malicious toggle is set to Disabled. To audit using PowerShell: 1. Connect to Exchange Online using Connect-ExchangeOnline. 2. Run the following PowerShell command: Get-AtpPolicyForO365 | fl Name,EnableATPForSPOTeamsODB,EnableSafeDocs,AllowSafeDocsOpen Verify the values for each parameter as below: EnableATPForSPOTeamsODB : True EnableSafeDocs : True AllowSafeDocsOpen : False

修正方法

修正方法: ガイダンスまたは IaC パッチ

To remediate using the UI: 1. Navigate to Microsoft Defender https://security.microsoft.com 2. Under Email & collaboration select Policies & rules 3. Select Threat policies then Safe Attachments. 4. Click on Global settings 5. Click to Enable Turn on Defender for Office 365 for SharePoint, OneDrive, and Microsoft Teams 6. Click to Enable Turn on Safe Documents for Office clients 7. Click to Disable Allow people to click through Protected View even if Safe Documents identified the file as malicious. 8. Click Save To remediate using PowerShell: 1. Connect to Exchange Online using Connect-ExchangeOnline. 2. Run the following PowerShell command: Set-AtpPolicyForO365 -EnableATPForSPOTeamsODB $true -EnableSafeDocs $true - AllowSafeDocsOpen $false

プロパティ

オペレーティングシステム: すべて
タグ: m365saas
参照: CIS Microsoft 365 Foundations Benchmark v7.0.0 - 2.1.5 Ensure Safe Attachments for SharePoint, OneDrive, and Microsoft Teams is Enabled