Joachim Biskup Ulrich Flegel Transaction-Based Pseudonyms in Audit Data for Privacy Respecting Intrusion Detection. 28-48 2000 conf/raid/2000 Recent Advances in Intrusion Detection http://link.springer.de/link/service/series/0558/bibs/1907/19070028.htm db/conf/raid/raid2000.html#BiskupF00