Philippe Biondi works as a research engineer at EADS Corporate Research Center in the system information security lab. He has given many talks in security or open source conferences.
He is the author of open source projects like Scapy, Shellforge, and was co-author of LIDS.
Philippe authored chapter 6 of Security Power Tools, in which Scapy takes a good place, and also chapter 11.
http://www.blackhat.com/html/bh-europe-06/bh-eu-06-speakers.html#Biondi
http://www.oreillynet.com/pub/au/2966
http://en.wikipedia.org/wiki/Scapy