How to govern Security in Slack
A step-by-step guide to governing Security in Slack with Rencore: detect, review by owner and severity, and remediate with an audit trail.
Governing Security in Slack means finding where it goes wrong, reviewing the findings by owner and severity, and remediating with an audit trail. Rencore covers this concern for Slack with the pre-built controls below, so it becomes a repeatable check rather than a one-off cleanup. The steps that follow apply the same detect, review, remediate loop to Security.
Steps
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Inventory Slack
Connect Slack and let Rencore build a continuous inventory of its resources, owners, and configuration, so governance starts from what exists rather than a stale export.
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Detect with policies
Turn on the pre-built policies that cover Security in Slack to surface oversharing, sprawl, and misconfiguration on the first scan, before writing a single custom rule.
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Review by owner and severity
Use the Slack reports to review findings by owner, category, and severity, and to share them with stakeholders who do not have a seat in the platform.
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Remediate and automate
Apply automations to fix findings at scale, route sensitive changes through approvals, and keep every action reversible and logged for the audit trail.
Slack controls for Security
Grounded in the Rencore catalog. See the full Slack catalog on the Slack connector page.
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Slack member is privileged
Members with admin privileges are a higher-value target, raising the likelihood that any weakness is exploited.
Severity: High -
Slack member is an external guest
Guest members are external and less governed, raising the likelihood that their access is misused.
Severity: Medium -
Slack channel is shared externally
Externally shared channels are reachable outside the tenant, raising the likelihood of data exposure.
Severity: High -
Slack file is public
Public files are reachable beyond the workspace, raising the likelihood of unauthorized access.
Severity: High -
Slack app holds sensitive scopes
Apps with sensitive scopes can read data and act broadly, raising the likelihood of real-world impact.
Severity: High -
Slack member deactivated in Entra ID
Detects Slack members whose linked Entra ID account is deactivated.
Severity: Medium -
Slack workspace has too many admins
Detects Slack workspaces with more than 5 admins or owners.
Severity: Medium -
Slack external guest member
Detects Slack members marked as multi- or single-channel guest.
Severity: Medium -
Slack file with public URL shared
Detects Slack files with a public shareable URL.
Severity: High -
Slack external-shared channel
Detects active Slack channels shared with external organizations.
Severity: Medium -
Slack user without 2FA
Detects active Slack members without two-factor authentication enabled.
Severity: Medium -
Slack admin/owner without 2FA
Detects Slack members with admin or owner role that do not have 2FA enabled.
Severity: Critical -
Slack app with sensitive scopes (unapproved)
Detects Slack apps holding sensitive scopes that are neither directory-approved nor internal.
Severity: High -
Stale Slack session
Detects Slack sessions with no activity in the last 30 days.
Severity: Medium -
Slack guest without expiration
Detects guest Slack members that do not have an expiration timestamp set.
Severity: Medium -
Private Slack channel shared externally
Detects private Slack channels that are shared with external organizations.
Severity: High -
Slack workflow by deactivated user
Detects Slack workflows whose creator has been deactivated.
Severity: Medium -
Repeated failed Slack logins (last 24h)
Detects Slack login_failed audit events in the last 24 hours.
Severity: High -
Slack user elevated to admin
Detects Slack role_change_to_admin audit events in the last 7 days.
Severity: High -
Mass Slack file download
Detects Slack file_downloaded audit events in the last 24 hours.
Severity: Critical
