Security Fest 2018 Challenge Badge
USB HID and serial puzzle 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.
Series
Security Fest
Swedish IT-security conference badge lineage, represented by source-backed challenge, CTF, tram, artistic PCB, and 2026 RP2040 LED-matrix badge records.
Events
Lineage Notes
Swedish IT-security conference badge lineage, represented by source-backed challenge, CTF, tram, artistic PCB, and 2026 RP2040 LED-matrix badge records.
Badges
Seeded records
Security Fest 2022 Tram Badge
Blinky Gothenburg tram badge
A conservative first-pass record for Security Fest's 2022 tram-inspired badge, remembered in later badge writeups as a fun blinky object inspired by Gothenburg trams with a Rickroll reference.
Security Fest 2023 Gothenburg Skyline Badge
UV-printed cyberpunk skyline CTF badge
A full-colour UV-printed Security Fest badge inspired by Gothenburg's skyline with a cyberpunk treatment, backside-mounted components, Micro-USB CTF interface, cryptography puzzles, and soldering-village LED personalization.
Security Fest 2024 Feskekôrka Piano Badge
Music-and-airship CTF building badge
A Security Fest 2024 badge shaped around Gothenburg's Feskekôrka fish-market landmark, with piano/touch-key gameplay, an airship story CTF, LEDs, USB-C serial interaction, and documented attendee/speaker/crew variants.
Security Fest 2026 RP2040 Badge
Source-backed RP2040 LED-matrix conference badge
Security Fest 2026's public firmware repository identifies this as the official conference badge: a small, hackable RP2040 device with a 9×9 LED matrix, six buttons, USB surface, and public firmware. The official event site confirms the completed May 28-29 Gothenburg conference, while a contemporaneous attendee report credits Carl Vargklint's badge work. Allocation and delivery are not documented.