How to Block PCI Data in SharePoint Automatically

SharePoint has no built-in PCI block rules. While SharePoint manages permissions and sharing policies, it does not inspect the actual content inside documents for cardholder data. This creates major PCI DSS gaps. Limitations include:

• No upload blocking for files containing credit card numbers
• No ability to stop OneDrive from syncing PCI into SharePoint libraries
• No content inspection inside PDFs, images, and scans
• No real-time “block on detection” workflows
• No PCI-specific templates or policies
• No blocking of external shares containing embedded PCI
• No ability to prevent bulk PCI uploads

When SharePoint accepts files containing PCI—even temporarily—it creates immediate PCI DSS violations (requirements 3.3, 3.4, 3.5, 4.2).

What (PCI) Credit Card Numbers Uploads Look Like Inside SharePoint

PCI often enters SharePoint silently through:

• PDF invoices with unmasked credit card numbers
• Bank forms and ACH documents
• Screenshots of customer payment cards
• Scanned authorization forms
• CSV exports from payment systems
• Offline OneDrive syncs containing card data
• Email attachments uploaded into SharePoint libraries

Common PCI patterns Strac blocks include:

• 4111 1111 1111 1111
• 4242-4242-4242-4242
• 5500 0000 0000 0004
• AMEX, Visa, Mastercard, Discover numbers
• Bank account + routing numbers
• IBAN and other global financial identifiers
• PCI hidden in PDFs, photos, receipts, and ZIP archives

Blocking these uploads prevents accidental exposure and ensures PCI never lands inside SharePoint.

What It Means to Block (PCI) Credit Card Numbers in SharePoint

Blocking means Strac stops PCI-containing files before they enter SharePoint or before risky actions occur. When PCI is detected, organizations can:

• Block file uploads
• Block new file versions
• Block OneDrive syncs
• Block external shares
• Block guest access
• Block copying/moving into shared libraries
• Block bulk document imports
• Trigger incident response workflows

Blocking PCI is stronger than alerting or redaction because it prevents data from ever entering a non-compliant environment.

Strac’s blocking engine supports:

• Real-time file inspection
• AI + OCR-based detection
• Policy-driven blocking rules
• Granular actions per library, user group, or site
• Full audit logs for PCI DSS compliance

How to Automatically Block (PCI) Credit Card Numbers in SharePoint with Strac

Strac inspects every file uploaded, synced, or modified in SharePoint. If PCI is detected, the upload or action is blocked instantly—before the sensitive data can be accessed or spread to other users.

How Strac blocking works in SharePoint:

• Scans uploads and new file versions in real time
• Analyzes content for credit card and bank account patterns
• Blocks the upload if PCI is detected
• Logs the event for audit and compliance
• Notifies security or compliance teams
• Applies custom rules (per library, department, or site)
• Works across SharePoint + OneDrive seamlessly
• Deploys without agents or end-user friction

Blocking prevents PCI from ever entering the SharePoint environment.

Real Examples of (PCI) Credit Card Numbers Blocking in SharePoint

Example 1 — Employee uploads scanned payment form
Strac blocks the upload and prevents PCI from being stored in the library.

Example 2 — OneDrive sync pushes a screenshot with a credit card
The sync is blocked before the file reaches SharePoint.

Example 3 — Vendor CSV with account numbers is uploaded
Strac blocks the file and logs the incident automatically.

Example 4 — Contractor attempts to upload invoice PDF with PAN numbers
Blocking prevents unauthorized PCI storage in shared libraries.

Every block event includes file metadata, user info, and detailed policy context.

Why Strac Is the Best Way to Block (PCI) Credit Card Numbers in SharePoint

• Works across SharePoint, OneDrive, Teams, Slack, Gmail, Salesforce, Jira, and more
• Supports PCI, PII, PHI, bank accounts, IBANs, routing numbers, and financial identifiers
• Real-time blocking + historical scanning
• OCR + AI detection for all file types
• Context-aware rules reduce false positives
• Zero-agent deployment
• PCI DSS–aligned audit logging

🌶️Spicy FAQs on How to Block (PCI) Credit Card Numbers in SharePoint

Does SharePoint block credit card numbers by default?

No. SharePoint does not scan files or block PCI uploads.

Can Strac block PCI inside images and scanned documents?

Yes. Strac uses OCR to detect and block PCI before files are stored.

Will blocking disrupt employee workflows?

No. Strac blocks sensitive content only; all other uploads continue normally.

Can Strac block PCI from OneDrive sync folders?

Yes. Strac blocks PCI before synced content reaches SharePoint.

Does this support PCI DSS compliance?

Yes. Blocking is aligned with PCI DSS requirements for preventing unauthorized storage.

Try Strac for SharePoint (PCI) Credit Card Numbers Blocking & DLP

Strac helps you automatically detect, classify, and block credit card numbers and bank account information across SharePoint libraries, synced folders, and document repositories—before PCI exposure becomes a compliance violation.