How Defender for Cloud Apps helps protect your Slack Enterprise

Note

Microsoft Defender for Cloud Apps is now part of Microsoft 365 Defender and can be accessed through its portal at: https://security.microsoft.com. Microsoft 365 Defender correlates signals from the Microsoft Defender suite across endpoints, identities, email, and SaaS apps to provide incident-level detection, investigation, and powerful response capabilities. It improves your operational efficiency with better prioritization and shorter response times which protect your organization more effectively. For more information about these changes, see Microsoft Defender for Cloud Apps in Microsoft 365 Defender.

Slack is a cloud service that helps organizations collaborate and communicate in one place. Along with the benefits of effective collaboration in the cloud, your organization's most critical assets may be exposed to threats. Exposed assets include messages, channels, and files with potentially sensitive information, collaboration, and partnership details, and more. Preventing exposure of this data requires continuous monitoring to prevent any malicious actors or security-unaware insiders from exfiltrating sensitive information.

Connecting Slack Enterprise to Defender for Cloud Apps gives you improved insights into your users' activities and provides threat detection for anomalous behavior.

Main threats

• Compromised accounts and insider threats

• Data leakage

• Insufficient security awareness

• Unmanaged bring your own device (BYOD)

How Defender for Cloud Apps helps to protect your environment

• Detect cloud threats, compromised accounts, and malicious insiders

• Use the audit trail of activities for forensic investigations

Control Slack with policies

Type	Name
Built-in anomaly detection policy	Activity from anonymous IP addresses Activity from infrequent country Activity from suspicious IP addresses Impossible travel Activity performed by terminated user (requires Azure Active Directory as IdP) Multiple failed login attempts Unusual administrative activities Unusual impersonated activities
Activity policy	Built a customized policy by the Slack Audit Log activities

For more information about creating policies, see Create a policy.

Automate governance controls

In addition to monitoring for potential threats, you can apply and automate the following Slack governance actions to remediate detected threats:

Type	Action
User governance	Notify user on alert (via Azure AD) Require user to sign in again (via Azure AD) Suspend user (via Azure AD)

For more information about remediating threats from apps, see Governing connected apps.

Protect Slack in real time

Review our best practices for securing and collaborating with external users and blocking and protecting the download of sensitive data to unmanaged or risky devices.

Next steps

Connect Slack to Microsoft Defender for Cloud Apps (Preview)