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117576 – Microsoft 365 apps: Microsoft 365 Apps and Services update to AES256-CBC for encrypting emails and files with Purview Information Protection

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*For this entry exists the more relevant or more recent entry MC590144

check before: 2023-08-01

Product:

Exchange, Microsoft 365 Apps, Outlook, Purview Communication Compliance, Purview Information Protection, SharePoint

Platform:

Android, iOS, Online, US Instances, Web, Windows Desktop, World tenant

Status:

Rolling out

Change type:

Feature update

Links:

MC590144

Details:

Microsoft 365 Apps, Exchange Online, and SharePoint Online will begin to use AES256 in cipher block chaining (CBC) mode by default when emails and documents are encrypted with Microsoft Purview Information Protection.

Change Category:
XXXXXXX ...

Scope:
XXXXXXX ...

Release Phase:
Semi-Annual Enterprise Channel, Current Channel, Current Channel (Preview), Semi-Annual Enterprise Channel (Preview), Monthly Enterprise Channel

Created:
2023-05-31

updated:
2023-09-07

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changes*

DatePropertyoldnew
2023-09-07RM StatusIn developmentRolling out
2023-06-01RM DescriptionToday, when protecting content Microsoft Information Protection uses AES in electronic codebook (ECB) mode to encrypt Office files and emails. Starting in July, M365 Apps, Exchange Online, and SharePoint Online will begin to use cipher block chaining (CBC) mode by default.Microsoft 365 Apps, Exchange Online, and SharePoint Online will begin to use AES256 in cipher block chaining (CBC) mode by default when emails and documents are encrypted with Microsoft Purview Information Protection.
2023-06-01RM Product TagsExchange, Outlook, Excel, SharePoint, PowerPoint, Word, Azure Information Protection, Microsoft Information ProtectionAzure Information Protection, Word, Microsoft 365 app, Microsoft Information Protection, Exchange, Outlook, Excel, SharePoint, PowerPoint
2023-06-01RM TitleMicrosoft Purview Information Protection uses cipher block chaining mode for encrypted content by default.Microsoft 365 apps: Microsoft 365 Apps and Services update to AES256-CBC for encrypting emails and files with Purview Information Protection
2023-06-01RM ReleaseJuly CY2023August CY2023

*starting April 2022

Last updated 7 months ago

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