Ta-Lun Yen — SPARQNOW

At-a-Glance

Serves as Sr. Vulnerability Researcher at Txone Networks.
Developed an LLM-assisted vulnerability discovery methodology presented at Black Hat USA '26.
Reverse-engineered proprietary Bluetooth, DDS robotics protocol, residential gateways, PON modems, QNAP NAS, and factory HMIs.
Chained six bugs into a nation-scale telecom takeover affecting an estimated 4M devices.
Built open-source tooling for vulnerability discovery, available as evanslify/onepct.

Biography

Ta-Lun Yen is a Senior Vulnerability Researcher at Txone Networks, where he specializes in breaking down systems that run on 0s and 1s, including firmware, embedded systems, and their communication protocols. His work involves reverse-engineering binary-only firmware and undocumented protocols across various sectors such as IoT, OT, and telecom.