Share Slack Access Safely: Invites, Guests
Share Slack Access Safely: Invites, Guests, and App Permissions
Why Slack needs guardrails
Slack holds credentials, contracts, and attachments. Shared logins kill audit trails and make offboarding messy. Use invites, guest roles, and MFA.
Safe access pattern
- Invite by email with the least privilege needed (Single-Channel or Multi-Channel Guest for narrow access).
- Require MFA for everyone. Need a memorable master? How to Create Strong Passphrases You’ll Actually Remember.
- Restrict app installs (admin approval) and review scopes regularly.
- No secrets in channels: deliver credentials via one-time, expiring links and split the access code to another channel (SMS/phone). How-to: The Safe Way to Share Passwords in 2025 (No Email).
Handoff & offboarding
- Create per-vendor guest accounts for agencies/contractors; avoid shared identities.
- Remove guests at project end and rotate any secrets they saw. Checklist: Employee Offboarding.
- Sweep threads for exposed data and clean up: Audit Your Old Messages (90-Minute Sweep).
Useful external references
- Slack: Roles & permissions 🔗
- Slack: Invite members 🔗
- Slack: Manage two-factor authentication 🔗
- Slack: App approvals 🔗
Related reading
Policy you can copy/paste: Secret-Sharing Policy
Safer file delivery than long-lived folders: Share Sensitive Photos and Documents Safely
Verify links before you click: Verify Links Like a Pro
Bottom line
Invite people, not passwords. Use guest roles, require MFA, review apps, and remove access when the work ends.
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