Security Fest 2018 Challenge Badge
A simple Security Fest 2018 challenge badge with USB-A, two buttons, four DIP switches, red/green LEDs, HID text output, serial puzzle flow, and an open SecBadge hardware repository.
Security Fest
Security Fest 2018
The Swedish Security Fest edition with a simple but public challenge badge built around USB HID, serial output, DIP-switch paths, and an open SecBadge hardware repository.
Gothenburg · Sweden · 2018
Lifecycle
Add-ons & Upgrades
Security Fest 2018 Challenge Badge
historical
DIP-switch clue paths
The writeup documents multiple clue texts triggered by toggling DIP switches and pressing a badge button, turning a small hardware input surface into the puzzle selector.
Security Fest 2018 Challenge Badge
historical
HID and serial puzzle flow
The badge presents itself as both HID and serial; HID button output gives onboarding and clues, while listening on the serial interface reveals the path into the PGP/key-recovery challenge.
Operational history
Issues & Camp Impact
The quoted badge text says the board is loaded with an Arduino Leonardo bootloader and can be treated as an Arduino clone, but warns that getting everything to work and fit can be finicky.
The compendium records this as a practical attendee caveat rather than an unresolved defect: the badge was intentionally open and modifiable, but not frictionless.
No Security Fest 2018 Challenge Badge image is published because the current public source trail has not been paired with a reusable original badge or artifact photo or official upstream raster render with source URL, license or permission basis, attribution, and processing notes.
The Sweden record remains source-backed and image-free rather than copying source-page media, documentation screenshots, event photos, social media, placeholders, or generated approximations.
The current build has not cleared a reusable original badge photo from the field writeup or repository.
The record remains source-backed for facts, while the catalogue withholds imagery until a licensed original photo is curated.
Resources
SecBadge BOM
bill of materials · BOM listing the 69x43 mm board's ATmega32U4, USB-A connector, four-position DIP switch, two tactile switches, red/green LEDs, crystal, passives, and ISP header.
Security Fest 2018 challenge badge writeup
field writeup · Zeta-Two field report documenting the challenge badge, HID/serial behavior, DIP-switch clue paths, prize flow, and community attribution.
SecBadge repository
source · Public hardware repository with board files, schematic/layout assets, firmware directory, and Gerbers for the challenge badge.
Sources
GitHub / znibb: SecBadge
Retrieved 2026-05-15 · Primary open-hardware source for board dimensions, design files, Gerbers, firmware directory, and component evidence.
Zeta-Two: Security Fest 2018 Challenge Badge & Prize Assembly
Retrieved 2026-05-15 · Primary field source for challenge behavior, HID/serial lore, clue flow, prize context, Weckzen attribution, and Zkylark Electronics thanks.