CONFERENCE METADATA — incomplete historical coverage; source presence is not proof of delivery.
Research dataset: Lukas Walter, Clemens Sauerwein, Daniel Woods, InfoSec.pptx, https://doi.org/10.5281/zenodo.15989593, CC BY 4.0 https://creativecommons.org/licenses/by/4.0/. Changes: metadata extraction, exact-match reconciliation and uncertainty flags. No endorsement implied.

{
  "id": "defcon-index-12-f15ce4591e86043c",
  "title": "Subliminal Channels In Digital Signatures",
  "presenters": [

  ],
  "event": "DEF CON 12",
  "year": "2004",
  "source_url": "https://infocondb.org/con/def-con/def-con-12/subliminal-channels-in-digital-signatures",
  "source_kind": "Independent InfoconDB index",
  "source_file": "infocondb-def-con-12.html",
  "rights": "Metadata and source links only; abstracts, biographies, transcripts and media not republished",
  "delivery_status": "Not independently verified",
  "title_status": "source supplied",
  "presenter_status": "unknown in imported source",
  "media": [

  ],
  "provenance": [
    {
      "file": "infocondb-def-con-12.html",
      "url": "https://infocondb.org/con/def-con/def-con-12/",
      "source_kind": "secondary independent index",
      "sha256": "5d3db1294d3c5a3786262db01d13169f45a8c78d2c1ee692526cd6103ac1559f",
      "checked": "2026-10-16T03:49:06Z"
    }
  ]
}