Megumi Takeshita, or Packet Otaku (Twitter: @ikeriri) runs a packet analysis company, Ikeriri Network Service, after having worked at BayNetworks and Nortel Networks in Japan. Ikeriri concerns packet analysis for troubleshooting, debugging and security inspection. Ikeriri is also a reseller of many wired/wireless capture and analysis devices and software for Riverbed, Metageek, Profitap, Dualcomm etc. Megumi has authored 10+ books about Wireshark and packet analysis in Japanese and she is one of contributors to the Wireshark project too.