Christian Herrmann, better known in the hacker community as “Iceman”, is a co-founder of AuroraSec and RRG, and has helped develop many of today’s most widely used RFID research tools, including the Proxmark3 RDV4 and the Chameleon Mini.

He is a well-known RFID hacking and Proxmark3 evangelist, serving the community as both a forum administrator and a major code contributor alongside other developers since 2013.
Christian has spoken at hacker conferences around the world, including RECON, TenguCon, BalcCon, WHY-2025, Troopers, Black Hat Asia, DEF CON, Hardwear IO, SSTIC, NullCon, Pass-the-Salt, BSides Tallinn, BlackAlps, and SaintCon.
He also runs a YouTube channel where he shares his knowledge of RFID hacking with the public.

With over 15 years of experience in bespoke software development, Christian specializes in
.NET platforms and is a Certified MCPD Enterprise Architect.

He possesses near-unmatched expertise in the Proxmark3 architecture and various RFID technologies, and has served as an instructor for Red Team Alliance (RTA), including training sessions at Black Hat.