Jeff "BigTaro" Geisperger

Jeff Geisperger is a security engineer with 15 years of experience specializing in hardware and device security. His work ranges from low-level firmware and embedded systems to the cloud services that power modern devices, with a focus on end-to-end security across the stack. Outside of his professional role, Jeff is active in the hardware hacking and badgelife communities. What began as a hobby collecting badges has grown into designing both indie and large-scale conference badges for thousands of attendees.