Your team is already using Claude. Do you know what they’re uploading?
Claude has become part of how work gets done: drafting, analyzing, summarizing, problem-solving. Employees paste in spreadsheets, upload contracts, share customer records and financial reports, all in pursuit of faster answers.
The trouble is what happens after. Every file uploaded to Claude moves outside your security team’s view, with no log and no alert. If that “quick upload” contained PII, source code, M&A documents, or regulated data, there’s currently no way to know. By the time a breach investigation starts, the question “what did Claude have access to?” often has no answer.
BigID closes that gap by connecting directly to Claude, giving your security and data governance teams real-time visibility into what’s being shared and automatically flagging activity when sensitive data is involved.
Why This Matters Now
AI adoption is outpacing AI governance. Every day, more sensitive data moves into tools like Claude, and most organizations have no monitoring layer in place to catch it. This is happening inside your environment right now, whether or not anyone on the security team knows about it.
Security teams don’t need to slow down AI adoption – they need visibility into it.
How BigID Secures Claude
BigID monitors activity between your users and Claude in real time, combining our classification engine with Claude’s activity data to deliver a continuous, accurate picture of what’s moving through the platform.
What sets BigID apart:
- Classification depth. BigID’s classification engine identifies exactly what’s inside a flagged file, down to the specific sensitive attributes present, so your team knows the real scope of exposure the moment an alert fires.
- Coverage beyond uploads. Most monitoring tools stop at the point of upload. BigID extends visibility to files Claude accesses or references, not just the ones a user directly attaches, closing a gap other approaches leave open.
Together, these capabilities give your team context they can act on, not just a record of what happened.
Complete Visibility in BigID
Once connected, every file interaction with Claude flows into BigID, giving your analysts a single, chronological record they can rely on. From here, your team can:
- Review a complete log of every file shared with Claude, in order, with full context
- Support audits with a clear record of what entered Claude and when
- Accelerate breach investigations by reconstructing exactly what information was accessible at any point in time
This is the record that didn’t exist before: a definitive answer to “what happened, and when.”
Automatic Alerts on Sensitive File Uploads
Logs tell you what happened. Alerts tell you what to worry about.
BigID includes a built-in policy, Sensitive File Upload to Claude, that continuously scans activity and automatically triggers a security alert the moment a file containing sensitive data is uploaded.
Each alert includes:
- Timestamp: exactly when the file was uploaded
- User: who uploaded it
- File details: what was shared with Claude
From the alert, analysts can open a live preview of the file directly in the BigID Data Catalog and see exactly which sensitive attributes are present, so remediation can start immediately instead of waiting on a follow-up request.
How Does BigID Monitor Sensitive Files Shared With Claude?
BigID helps organizations monitor supported file interactions in Claude by connecting AI activity information with sensitive data discovery and classification. This gives security and governance teams context about which files were shared, who shared them, and whether those files contain sensitive information.
With the appropriate integration configured, teams can:
- Monitor file activity: Review supported file uploads and other captured file interactions associated with Claude.
- Identify sensitive information: Use BigID classification to understand which sensitive attributes appear in monitored files.
- Review activity context: Examine available timestamps, user details, and file information to support investigations.
- Receive automated alerts: Use the Sensitive File Upload to Claude policy to identify monitored uploads containing sensitive information.
- Investigate potential exposure: Review available file context through BigID’s Data Catalog and prioritize appropriate follow-up actions.
This approach helps security teams move beyond basic AI usage awareness toward understanding the data-related risks associated with supported Claude activity.
Learn more about how BigID supports AI security and governance across enterprise environments.
Why It Matters
Without BigID, security teams have no visibility into what’s uploaded to Claude, sensitive data exposure surfaces only after the fact, if it surfaces at all, and breach investigations start from zero. With BigID in place, that picture changes entirely: your team gets real-time visibility into every file interaction, sensitive uploads are flagged the moment they happen, and investigations begin with a complete activity trail already in hand. The difference comes down to posture. Security teams stop reacting to AI adoption and start governing it.
The Bottom Line
Claude adoption isn’t slowing down. The organizations that manage this well won’t be the ones restricting AI use; they’ll be the ones with visibility into how it’s being used.
BigID gives your security and governance teams the ability to see, understand, and act on sensitive data moving through Claude in real time, with the classification depth to know exactly what’s at stake and the coverage to catch what other tools miss.
Ready to see what’s really moving through Claude in your environment? Let’s get started.