Rafal Wojtczuk is the author of libnids,
the low-level library designed as a com-ponent
of Network Intrusion Detection
Systems. He has also published a few
articles describing original exploit
techniques, among others the non-executable
stack evasion and the new method of TCP blind
spoofing against Linux. Since March 2001 he has been
participating in Openwall GNU/*/Linux development.