About authors

Dr. Andrew A. Vladimirov (Bristol, England), CCNP, CCDP, CISSP, CWNA, TIA Linux+, is a researcher with a wide area of expertise ranging from applied cryptography and network security to bioinformatics and neuroscience. He published his first scientific paper at the age of 13 and is one of the co-founders of Arhont Ltd., one of the leading IT/network security consultancies in the UK. Andrew has extensive experience working with Cisco routers, switches, and PIX rewalls, including design and penetration testing of Cisco-based networks, and has previously uncovered and published several flaws in IOS at Bugtraq. He has also published a variety of papers devoted to network/protocol security and authored a chapter on the subject of wireless security in "Network Security: The Complete Reference" (McGraw-Hill/Osborne) and is a co-author of "Wi-Foo: The Secrets of Wireless Hacking" (Addison Wesley, 2004). Andrew is supportive of both the open source and full disclosure movements. He is a graduate of Kings College London and the University of Bristol.

Konstantin V. Gavrilenko (Bristol, England) has more than 12 years experience in IT and security and together with his co-authors is a cofounder of Arhont Ltd. Konstantin's writing draws primarily from his real world knowledge and experience in security consultancy and infrastructure development for a vast range of clients. He is open minded and enthusiastic about research, where his main areas of interest lie in security in general and more specifically in firewalling, cryptography, VPNs, and IDS. Konstantin has an extensive experience working with Cisco PIX firewalls and Cisco VPN concentrators and client applications. He is proud to say that he is an active supporter of open source solutions and ideology, public disclosure included. Konstantin has published a variety of advisories at SecurityFocus and PacketStorm, uncovering new software vulnerabilities, along with being a co-author of the bestselling "Wi-Foo: The Secrets of Wireless Hacking". He holds a first class BSc honors degree in Management Science from DeMontfort University and an MSc in Management from Lancaster University.

Janis N. Vizulis (Bristol, England) is a researcher and programmer with a wide area of expertise ranging from digital forensics (11 years of forensics experience in hands-on criminal police work) to black and white box penetration testing with a main focus on the gambling industry and including security consultancy in the development of online banking applications for major players in the gambling industry and developing anti-DDoS and load-balancing network solutions, many of them Cisco-based. His main interest in security lies in network protocols and web application security, including the development of protocol and application fuzzing tools for new vulnerabilities discovery and equipment and application security stress-testing. Janis was the leading developer of the new tools released during the writing process of this "Hacking Exposed" tome.

Andrei A. Mikhailovsky (Bristol, England) first became enticed by UNIX flavors back in high school times. He cultivated and expanded his knowledge into the networking aspects of information technology while obtaining his bachelors degree from the University of Kent at Canterbury. Soon he was engrossed in network security and penetration testing of Internet-centric equipment including various Cisco devices. On accomplishing his MBA, he co-founded information security company Arhont, participated in security research, published articles and advisories, and greatly contributed to the overall success of the Arhont team. Andrei's technical particularities include user and device authentication mechanisms, database and directory services, wireless networking security, and systems integration. He has extensive experience working with Cisco implementations of RADIUS and TACACS authentication protocols.


 
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