Issue dossier
Public sources document the cassette, liner, lanyard, and media-server availability, but this pass does not mirror or audit every audio file, transcript, tape variant, or final puzzle solution branch.
A linkable camp-impact record with badge context, severity, evidence confidence, and source notes.
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audio-artifact caveat · source-backed but incomplete · needs deeper artifact inventory
The catalogue records the verified analog badge surfaces and leaves complete audio forensics for a later artifact-level pass.
- Badge
- DEF CON 28 Safe Mode Badge
- Category
- audio-artifact caveat
- Severity
- note
- Confidence
- source-backed but incomplete
- Status
- needs deeper artifact inventory
- Timeframe
- current DEF CON 28 pass
- Source note
- DEF CON forum challenge post, Hackaday hands-on article, and CIRCUITS TO KERNEL writeup.
challenge writeup
Independent writeup source documenting the lanyard, cassette tape, liner-front, liner-back, character-color puzzle, and challenge timing.
Badge: DEF CON 28 Safe Mode Badge
event archive mirror
Archived DEF CON Safe Mode page source for the in-person cancellation, August 6-9 online event context, optional Human Plus support model, and official cassette-badge announcement.
Badge: DEF CON 28 Safe Mode Badge
event metadata
InfoconDB source for DEF CON 28 virtual location, August 6-9, 2020 dates, free general admission, and official conference links.
Badge: DEF CON 28 Safe Mode Badge
field report
Contemporary Hackaday source documenting the physical cassette, jewel case, lanyard, liner notes, tones, number-station-like audio, and collaboration project.
Badge: DEF CON 28 Safe Mode Badge
official forum thread
DEF CON forum source proving badge purchase/support context, LosT creator attribution, challenge surfaces, and media.defcon.org cassette-content availability.
Badge: DEF CON 28 Safe Mode Badge
CIRCUITS TO KERNEL · retrieved 2026-05-15
Challenge writeup source for lanyard, cassette, liner-front, liner-back, color-character puzzle observations, and puzzle-start timing.
Badge: DEF CON 28 Safe Mode Badge
DEF CON Forums · retrieved 2026-05-15
Official forum source for badge creator LosT attribution, cassette/lanyard/liner challenge scope, and media-server availability for cassette contents and liner notes.
Badge: DEF CON 28 Safe Mode Badge
DEF CON archive mirror · retrieved 2026-05-15
Event archive source for Safe Mode cancellation/online-event context, Human Plus support framing, and the official announcement that the badge was a LosT-created cassette tape.
Badge: DEF CON 28 Safe Mode Badge
Hackaday · retrieved 2026-05-15
Contemporary source for the physical cassette badge, jewel case packaging, lanyard characters, liner-note clues, audio tones, number-station-like opening, and Hackaday.io collaboration context.
Badge: DEF CON 28 Safe Mode Badge
InfoconDB · retrieved 2026-05-15
Event metadata source for virtual location, August 6-9, 2020 dates, free general admission, and official DEF CON 28 links.
Badge: DEF CON 28 Safe Mode Badge