Instruction-like content
Text that appears to direct an AI, change its task or influence how it handles the project.
PDF security for AI projects
PDF supported · Up to 4 MiBA PDF can contain hidden text, instructions and active features beyond the visible page. Check incoming versions before they become AI context, follow the decision and retrieve the current Approved copy. PDF files up to 4 MiB are supported, subject to supported structure and complexity limits.
Three destinations
The Collection keeps all three outcomes organised. Membership does not grant approval or retrieval.
No decision: The scan could not complete, so no security decision was made. Retry is available and no new scan credit is consumed.
The PDF problem
PDFs are containers for text, layout, links, metadata and other machine-readable structures. Content that is difficult for a person to notice may still be extracted when the file is used with an AI tool.
The useful question is not only “Does this PDF look normal?” It is also “What might the AI read, and should any of it be reviewed first?”
Understand prompt injection in documentsWhat deserves attention
Review supported document surfaces together before AI use.
Text that appears to direct an AI, change its task or influence how it handles the project.
Supported content that may be concealed, encoded or otherwise easy to miss during ordinary visual review.
Supported remote links, active features and PDF conditions that may require a closer look.
Your document workflow
PDF supported · Up to 4 MiBKeep the boundary visible whenever a PDF moves from an outside source into AI-assisted work.
When a replacement is accepted, it becomes current immediately. The earlier version remains in history but is not available as a fallback while the replacement is pending or held. A scan supports a human decision; it does not prove that a document is harmless or replace normal source, privacy and security checks.
Before AI use
A short checklist helps stop “looks fine” from becoming the only document-security control.
This checkpoint is limited to the supported checks and coverage reported for the exact version.
Before documents become AI context
Check an incoming PDF, follow its decision and retrieve the current Approved copy for your AI workflow. PDF files up to 4 MiB are supported today.