Dear colleagues, is there anybody who can give some substantial informations about the intru- sion detection systems PSID, Saturne and Stalker ? Thanks in advance Michael Sobirey Cottbus University of Technology e-mail: sobirey@informatik.tu-cottbus.de Computer Science Institute Postbox 10 13 44 phone: (+49) 355 69 2101 D-03013 Cottbus fax: (+49) 355 69 2236 Federal Republic of Germany