Dr Stephen Castell CITP, Medallist, IT Consultant of the Year, is a leading forensic expert witness acting in computer software and systems disputes, including the largest and longest software development cases to have reached the English High Court and the Sydney Supreme Court; and increasingly involved as an expert witness in cryptocurrency and digital assets disputes.

Dr. Lavian specializes in telecommunications, network communications, and Internet protocols, including computer networks, data communications, routing, switching, LAN/WAN, Ethernet, TCP/IP, UDP, VPN, VoIP, mobile wireless, streaming media, Chat, SMS, Internet, and web technologies. Extensive testifying experience in Federal, IPR, and ITC. Named inventor on over 120 issued and filed patents.