Enterprise Wide Web Application Security: An Introduction Enis Karaaslan Ege University International Computer Institute, Turkey About The Authors Enis Karaaslan is a research assistant at Ege University having his PhD. He is also working as the campus network manager of Ege University. On his academic research, he is working on intrusion detection systems focusing on the application level and multi-layer security. Other research interests include network analysis and security. Mailing address: Information and Communication Technologies Centre, Network Management Group, UBE building 1 st Floor, 35100 Bornova, İzmir / TURKEY; Phone: +90(232) 342-32-32/222; Fax: +90(232) 343-55-42; E-mail: enis@bornova.ege.edu.tr Tugkan Tuglular İzmir Institute of Technology, Department of Computer Engineering, İzmir, Turkey About The Author Tugkan Tuglular received his Bs and Ms degrees in Computer Engineering at Ege University, in 1993 and 1995, respectively. He has received scholarship and worked for COAST Lab., Purdue University, under Prof. Dr. Spafford between 1996 and 1998. He received his Ph.D. degree in Computer Engineering at Ege University in 1999. Currently, he works at Izmir Institute of Technology as Assistant Professor. His research interests presently include intrusion detection and security policies. Mailing Address: Department of Computer Engineering, Izmir Institute of Technology, Gulbahce Koyu, Urla, Izmir, TURKEY; (90) 232 750-6505, tugkantuglular@iyte.edu.tr Halil Sengonca Ege University Computer Engineering Department, Turkey About The Author Prof. Sengonca is a supervisor and lecturer at Ege University Computer Engineering Department. He has supervised various PhD, MSc and BSc thesis. He has been lecturing the following courses: Software Engineering, Advanced Computer Programming, Database Management Systems, Systems Analysis, Client Server Systems and Security, Management of Software Development Projects. Prof. Şengonca has published 40 papers in various journals and conferences and 2 books on Computer Science and Databases. Mailing address: Ege University, Department of Computer Engineering, 35100 Bornova, İzmir / TURKEY; Phone: +90(232) 388-72-21; Fax: +90 (232) 339-94-05; E-mail: sengonca@staff.ege.edu.tr Descriptors: web security, application level firewall, web application firewall, web application proxy, web application gateway, web crypto gateway, web antivirus gateway, intrusion prevention system, web application security tools.