Sunitha SamuelSenior Test Lead Microsoft

Message Encryption in Office 365

SPR202

Why is message encryption needed?

Departmental Only Emails

Medical Records

Bank Statements

Super Secret Information Credit Card Information

Inter company confidential Memos

Office 365 Message Encryption – Encrypt messages to any SMTP address

Personal account statement from a financial institution

Information Rights Management – Encrypt content and restrict usage; usually within own organization or trusted partners

Internal company confidential memo

S/MIME – Sign and encrypt messages to users using certificates

Peer to peer signed communication within a government agency

Encryption Solutions in Office 365

Admin:• Simple to provision and configure• Policy driven via Transport Rules• Customizable branding of encrypted emails and mail reading portal• Allows for Enterprise content inspection and compliance

Sender:• Ability to send encrypted messages to any SMTP address regardless of recipient’s client

or service provider

Recipient:• View encrypted messages on Office 365 Message Encryption portal after sign-in• Office 365 Message Encryption portal has rich OWA controls for viewing and composing

messages• Replies from the portal are also encrypted

Office 365 Message Encryption

How do recipients sign-in to view messages? – 2 ways• Microsoft account – used for sign-in to Microsoft services like OneDrive,

XBOX Live, etc…• Microsoft account for hotmail.com, outlook.com, live.com already exists• User can create Microsoft account for any SMTP address, like gmail.com, mycustomdomain.com –

address verification done as part of account creation process• If recipient does not have a Microsoft account, recipients are navigated through the process of

creating one• For a given email address, a single Microsoft account is used to access all Microsoft services and

view future encrypted emails

• Organizational Account – used for sign-in to workloads like Exchange Online, SharePoint Online, etc…

• As Office 365 embraces additional identity providers, so will Office 365 Message Encryption.

Office 365 Message Encryption

Demo

• Contoso Pharma wants to send encrypted emails to its partner doctors.

• Administrator has configured an ETR to encrypt any message going to Dr Toni when the subject contains the word “Encrypt”

• Dr Toni gets the encrypted email at his hotmail address and follows instructions to view the encrypted message send from Serena

• New ETR actions configurable via UI or PowerShell

Office 365 Message Encryption – Admin Configuration

New-TransportRule –Name EncryptRule <Condition for which to apply encryption> -ApplyOME $true

New-TransportRule –Name DecryptRule <Condition for which to remove encryption> -RemoveOME $true

• Customize opening text in encrypted email and disclaimer statement

Office 365 Message Encryption – Admin Configuration

Set-OMEConfiguration -Identity default -EmailText "Encrypted message from ContosoPharma secure messaging system"

Set-OMEConfiguration -Identity default -DisclaimerText “This email message and its attachments are for the sole use of the …"

• Customize portal text and logo

Office 365 Message Encryption – Admin Configuration

Set-OMEConfiguration -Identity default -PortalText "ContosoPharma secure e-mail portal"

Set-OMEConfiguration -Identity default -Image (Get-Content "C:\Users\admin\Desktop\contoso.png” -Encoding byte)

• Modern O365 UI and rich OWA controls

Office 365 Message Encryption – Modern UI

Office 365 Message Encryption - Under the hood

Exchange Online

Policy detection and Enforcement

Tenant configuratio

n

O365 User Internet UserSend

Microsoft account/Organization

Account

Mail Reading Portal

Deliver

Post

• Office 365 Message Encryption uses IRM as a platform to encrypt message• Sending organization needs to have purchased and configured Azure Rights Management Services (RMS)• Keys imported from Azure RMS are 2048 bit and use SHA-256 encryption

• Encrypted messages are wrapped in an HTML file and sent as an attachment to intended recipients• HTML file contains the encrypted message along with other metadata• Messages can be viewed on any device that can open and post from an HTML file

• When user opens and clicks on link in the attachment, encrypted content is posted and held temporarily while user authenticates• User authenticates using a Microsoft account or Organizational Account• If user has neither, user is told and asked to create a Microsoft account before viewing• Any email address (@yahoo.com, @gmail.com, etc…) can be used to create a Microsoft account

• Once the authentication completes, message is decrypted and shown in modern UI with all rich OWA controls

• Messages replied from the portal are also encrypted

Office 365 Message Encryption - Under the hood

Purchasing Office 365 Message Encryption

Office 365 Message Encryption is included with Azure RMS

* On-premise customers need to route mails through Exchange Online** Windows Azure Rights Management is not available for Office 365 Small Business plans

Plan Requires Price

Office 365 E3, E4 Windows Azure Rights Management is included

Included

Office 365 E1, K1 Windows Azure Rights Management $2 PUPM

Office 365 Exchange Online Plan 2, Plan 1, Kiosk

Windows Azure Rights Management $2 PUPM

Office 365 SharePoint Plan 2, Plan 1 Windows Azure Rights Management $2 PUPM

Office 365 Midsize Business Windows Azure Rights Management $2 PUPM

Exchange on-premises Windows Azure Rights Management $2 PUPM

• Customers using EHE will be upgraded to Office 365 Message Encryption at no additional cost

• Awareness and transition emails will be sent prior to transition – Transitions started for Q1CY14

• No action required on tenant admins – existing EHE policies will be automatically migrated to Office 365 Message Encryption policies

• EHE mail recipients will continue to have access to view their old encrypted emails

• EHE account store and emails already encrypted with EHE will not be migrated to Office 365 Message Encryption

Upgrade: Exchange Hosted Encryption to Office 365 Message Encryption

Upgrade: Exchange Hosted Encryption to Office 365 Message Encryption

Feature Exchange Hosted Encryption Office 365 Message Encryption

Send Encrypted Mail to anyone Available Available

Custom Branding Not Available Available

Message attachment size limit 10 MB 25 MB

Integration with Exchange transport rules

Available, but complex headers involved

Available and simplified

User experience Custom EHE portal Enhanced Office 365 UI

Integration with Data Loss Prevention

Available Available

Purchase Option Sold Standalone Included with Azure RMS

• Information Protection technology• Protection is persisted with the data, content can travel anywhere

(desktops, file shares, USB keys, cloud drives, network and devices)

• Combines encryption and usage restrictions• Prevent accidental disclosure of sensitive data by applying usage

polices (cannot forward, cannot print, read-only)

• Simple to use• Authors just select a policy option, consumers just open documents• Administrators can configure policies to protect content automatically• Securely share data with individuals within organization and trusted

partners

Information Rights Management

Admin:• Simple to provision and configure using Windows Azure Rights

Management – No on-premises RMS server required• Policy driven via Transport Rules• Allows for Enterprise content inspection and compliance

Sender:• Ability to send IRM protected messages to recipients in the organization

using supported clients - OWA and Microsoft Office 2010 and 2013

Recipient:• Ability to view IRM protected content just like regular emails using

supported clients (OWA, Microsoft Office 2010 and 2013, EAS)

Information Rights Management – Exchange Online

• Automatically protect email with IRM using Exchange Transport Rules

Information Rights Management – ETR & DLP

• Protect email with IRM right from the Outlook Web App.

Information Rights Management – OWA

Government preferred way to secure email communication• Based on a published and broadly supported standard• Must know recipients public cert to send them encrypted mail• Must have private key associated with sending email address to sign

email• Without having recipients private key, no one can open and view the

message

Exchange on-prem continues to support S/MIMEOWA 2013 support added in SP1

S/MIME

Admin:• Admin provisions certificates to users and synchronizes them with

Exchange Online• Simple Exchange Online configuration for S/MIME OWA behavior

Sender:• Ability to send signed and encrypted email to intra organization

recipients who are properly configured

Recipient:• Ability to view signed and encrypted emails using OWA and supported

clients and reply

S/MIME in Exchange Online

• Admin Exchange Online configuration options

S/MIME in Exchange Online

Demo

• Contoso Pharma researchers want to discuss and talk about a research drug securely

• Serena sends email to Rosella using OWA • Rosella views the email on OWA and responds

SummaryOffice 365 Message Encryption – Encrypt messages to any SMTP address

Personal account statement from a financial institution

Information Rights Management – Encrypt content and restrict usage; usually within own organization or trusted partners

Internal company confidential memo

S/MIME – Sign and encrypt messages to users using certificates

Peer to peer signed communication within a government agency

Q/A

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