More than a few people have been caught out by sharing documents which had sensitive information hidden in document metadata.
These slip-ups are primarily caused by a lack of understanding about document metadata — what it is, how it is created, edited, and removed — and also how it is stored within the file.
In this resource doc from Adobe they explain how to view, edit and even reuse document metadata in PDFs.
If you’re interested in the topic here are a few interesting articles that you might like to read:
