How to Delete Sensitive Credit Cards (PCI) in Slack
Learn how to automatically delete credit card numbers (PCI data) in Slack using Strac’s real-time Slack DLP engine that removes sensitive content instantly.
Slack is a powerful collaboration platform; however it stores all message history unless manually cleaned. When users paste payment details or upload invoices with full card numbers, that content remains in Slack indefinitely. PCI DSS prohibits storing unprotected card numbers, making automatic deletion critical.
Strac identifies messages containing PCI and deletes them instantly; ensuring no sensitive card data remains inside Slack.
Slack does not provide auto-delete workflows for PCI or any sensitive data. Only message authors or workspace admins can delete messages; and Slack cannot programmatically inspect the contents of files or images. Messages containing PCI often remain in archived channels or DMs, creating compliance exposure.
Slack lacks:
• PCI-sensitive auto-deletion;
• OCR deletion for images;
• File removal automation;
• Policy-driven deletion rules;
• Audit logs for compliance.
PCI deletion protects teams from accidental leaks during:
• Customer support exchanges;
• Payment troubleshooting;
• Billing escalations;
• Developer debugging sessions;
• Invoice processing.
Deletion applies to:
• Messages;
• Threads;
• DMs;
• File uploads;
• Image uploads;
• PDFs scanned with OCR;
• Entire message blocks in multi-line content.
Strac ensures no PCI ends up stored in Slack; even for a second.

Auto-delete workflows include:
• Delete message instantly;
• Remove the file or image;
• Notify admins;
• Notify user;
• Create audit log;
• Optional redacted replacement;
• Optional remediation escalation (block or alert).
Strac combines real-time detection with immediate deletion; ensuring PCI never remains inside Slack. This prevents storage of card numbers; satisfies PCI DSS requirements; and reduces risk across support and engineering workflows.
Strac provides:
• Instant PCI deletion;
• File-level deletion for PDFs and images;
• Admin and SIEM alerts;
• Historical cleanup capability;
• Full Slack coverage including DMs;
• Compliance-ready logs;
• Rapid deployment.
No; Slack does not have auto-delete for PCI.
Yes; Strac uses OCR to detect and remove sensitive content.
Yes; you can configure user notifications.
Yes; it prevents prohibited storage of card numbers.
Yes; Strac supports historical Slack cleanup.
Strac automatically deletes card numbers from Slack before they spread, keeping your environment PCI compliant and secure.
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