C2PA metadata: what AI provenance tags reveal about images
C2PA metadata is the new provenance signature on photos and AI images. Here is what it records, what it leaks and when to strip the manifest before sharing.
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Blog
Notes, updates, and the occasional opinion.
PowerPoint metadata: speaker notes, edit times, authors
PowerPoint metadata leaks speaker notes, uncropped photos and embedded source spreadsheets. Here is what a finished deck still carries when you forward it on.
Read more →CV metadata: what recruiters quietly see in your file
CV metadata can leak salary notes, agency templates and your current employer to recruiters. Here is what is inside the file before any human reads a word.
Read more →Metadata leaks that have exposed real-world sources
Metadata leaks have outed civil servants, NSA contractors and journalist sources. Here are the cases, the mechanisms and what publishers do differently now.
Read more →Camera serial numbers in JPEGs: how photos get traced
Camera serial numbers in JPEGs chain anonymous photographs back to a single device. Here is how investigators use them and how to strip them before publishing.
Read more →Excel metadata: device fingerprints in every spreadsheet
Excel metadata carries author names, revision logs, embedded source data and template paths. Here is what an .xlsx workbook leaks before you read a single cell.
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GPS in phone photos: what your camera roll really shares
GPS in phone photos is on by default, written into every picture's EXIF block. Here is what survives uploading, sharing and reposting your camera roll.
Read more →Why PDF redaction often leaks the very text it hides
PDF redaction tools draw black boxes over text, but the words underneath often stay in the file. Here is how the leak happens and what really removes it.
Read more →What Word document metadata actually saves about you
Word document metadata stores names, edit history, printers, network paths and template details. Here's what every .docx quietly tells the recipient anyway.
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