Document provenance is the history and trustworthiness of a file: where it came from, who handled it, what changed, and whether it still contains hidden or unexpected material. In cyber security, provenance is important because a file is not always just “data.” It can also carry instructions, macros, embedded objects, metadata, or other content that changes how software processes it.
Attackers can abuse weak provenance checks by planting hidden text or other non-visible content inside office documents, then relying on email, shared drives, or AI assistants to ingest the file as if it were benign. Defenders use provenance checks to decide whether a document should be opened, sanitized, or rejected. That may include inspecting metadata, removing hidden content, tracking source systems, and verifying the file before it is reused in automation or AI-assisted drafting.