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secrets-in-file-metadata

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Extract and interpret embedded file metadata with exiftool — EXIF GPS coordinates, camera make, model and serial, DateTimeOriginal and CreateDate timestamps, XMP and IPTC fields, and Office and PDF properties such as Author, Company, LastModifiedBy, template paths and revision counts. Use when reading EXIF from a photo, checking who really wrote a document, dating a file, fingerprinting a camera or phone, or investigating provenance in JPEG, HEIC, RAW, MP4, DOCX, XLSX or PDF. Applies to document-provenance disputes, insider-leak attribution, evidence handling, and pre-publication redaction checks. Reference at useosint.com/skills/secrets-in-file-metadata.

skills/secrets-in-file-metadata/SKILL.md

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# Secrets in file metadata

The fastest lead in an investigation is often already inside the file: GPS to six
decimal places, a camera serial that ties four "unrelated" images to one body, a
document author who is a real employee, a template path containing a corporate
share name.

Two things beginners get wrong. Absent metadata is not suspicious — it is the
normal state of anything that passed through a social platform. And present
metadata is not proof: every tag is a **claim written by whatever software touched
the file last**, and all of it is editable with one command.

## Where to look first, given what you have
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