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To block users from sending emails containing information subject to the Payment Card Industry Data Security Standard (PCI DSS), you can create a Data Loss Prevention (DLP) policy in Microsoft Exchange Online. Here’s how:

Create a Custom DLP Policy:

Log in to the Microsoft Exchange Online admin center.

Navigate to Data loss prevention > Policy.

Create a new custom policy specifically for PCI DSS compliance.

Define Conditions:

In the policy settings, define conditions that identify sensitive data related to PCI DSS. For example:

Keywords: Include terms like “credit card,” “debit card,” or specific card number formats.

Regular Expressions (Regex): Craft expressions to match credit card patterns (e.g., \b\d{4}-\d{4}-\d{4}-\d{4}\b for Visa/Mastercard).

Sensitive Information Types: Use built-in or custom sensitive information types related to payment cards.

Choose Actions:

Specify the actions to take when sensitive data is detected in emails:

Block: Prevent the email from being sent.

Notify Sender: Inform the sender that sensitive data is not allowed via email.

Add Disclaimer/Watermark: Optionally add a disclaimer or watermark to the email.

Apply the Policy to Emails Only:

Ensure that the policy is configured to apply only to emails (not other communication channels).

Exclude internal communication if necessary.

Test and Monitor:

Enable the policy in test mode initially to validate its effectiveness.

Monitor logs and adjust the policy as needed.

To retain all Microsoft Exchange items in Alex Wilber’s mailbox that contain the word “Falcon” and were created in the year 2021, follow these steps:

Create a Retention Policy:

Sign in to the Microsoft 365 compliance center.

Navigate to Policies and click on Retention.

Create a new retention policy (e.g., “Falcon Retention 2021”).

Specify the retention period (e.g., 2 years from the creation date).

Set the condition to include items containing the word “Falcon.”

Apply the Retention Policy to Alex Wilber’s Mailbox:

Assign the retention policy to Alex Wilber’s mailbox.

Ensure that the policy targets items created in the year 2021.

Validate the Policy:

Test the policy thoroughly to ensure it correctly retains the specified items.

Monitor the mailbox to verify that the retention actions are enforced.

To restrict the Confidential - Finance label to only the members of the Finance Team group, follow these steps:

Create a Sensitivity Label:

Log in to the Microsoft Purview portal or the Microsoft Purview compliance portal as an admin.

Navigate to Sensitivity labels and create a new label called “Confidential - Finance”.

Specify the appropriate settings for this label, including encryption, content markings, and permissions1.

Configure Encryption Settings:

When creating the label, ensure that you configure the encryption settings.

Choose either to assign permissions now (where you determine exactly which users get which permissions) or allow users to assign permissions when they apply the label to content2.

Assign the Label to the Finance Team Group:

In the Microsoft Purview portal, go to the Groups section.

Select the Finance Team group.

Under Settings, choose Sensitivity labels.

Add the “Confidential - Finance” label to this group.

Only members of the Finance Team will now have access to this label3.

Test the Configuration:

Verify that only members of the Finance Team can apply the “Confidential - Finance” label to documents, emails, or other content.