Spotlight customer reviews:
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Customer Rating: 
Summary: Extrusion Detection - Richard Bejtlich
Comment: This book is a MUST for any security person that wants to learn how to implement ingress to egress monitoring traffic analysis. Thank you Mr. Bejtlich for your wonderful work writing this book from everyone to understand. To have a better understaing of Extrusion detection, I suggest anyone to refer to his other book The TAO of Internet security monitoring.
Customer Rating:
Summary: super
Comment: Thanks a lot, we are very happy to have this book in our library!
Customer Rating: 
Summary: I learned a lot
Comment: This is a solid book and a detailed read. I was on the fence about giving it 4 or 5 stars; if I could I'd give it 4.5. While it didn't blow my socks off, I would suggest it to anybody interested in security monitoring in general. In terms of monitoring internal threats specifically it also has some useful information.
Customer Rating:
Summary: Excellent Book
Comment: Richard Bejtlich done great job again. Tao of Network security and this one are best companion. Well written. Extrusion topic is mostly companies preferred to spend budget or time and ignore. Although NSM methodologies are repeated but fun to read again. Traffic threat assessment, designing defensive network, and incident response are well written,
Customer Rating:
Summary: Excellent Book!
Comment: I have had the pleasure of reading Extrusion Detection: Security Monitoring for Internal Intrusions by Richard Bejtlich. Richard Bejtlich picks up where he last left off with his first book Tao of Network Security Monitor: Beyond Intrusion Detection. His new book deals with a subject that many businesses don't wish to think about, and what over 50% of attacks come from, Security breaches that come from the inside an organization. It is very unfortunate that this fact was not taken into consideration in Microsoft's XP SP2 firewall.
Richard starts with a short review of network definitions. One concept I really like is the Defensible Network which he states is not necessarily a secure network, "quite accurate".
Richard includes a listing networking monitoring tools with where you can go to obtain them; Full Content Data, Session Data, and Statistical.
This book includes good illustrations, explained pieces of code (more toward the second half of the book), and includes pictures of familiar hardware.
A new definition for me was "the sink hole", that redirects unknown traffic away from the customers.
This book is a good read and a very good book to keep in one's reference library. I will be obtaining Richard Bejtlich's Tao of Network Security Monitor: Beyond Intrusion Detection and I suspect this will be just as good.
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Editorial Reviews:
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Overcome Your Fastest-Growing Security Problem: Internal, Client-Based Attacks Today's most devastating security attacks are launched from within the company, by intruders who have compromised your users' Web browsers, e-mail and chat clients, and other Internet-connected software. Hardening your network perimeter won't solve this problem. You must systematically protect client software and monitor the traffic it generates. Extrusion Detection is a comprehensive guide to preventing, detecting, and mitigating security breaches from the inside out. Top security consultant Richard Bejtlich offers clear, easy-to-understand explanations of today's client-based threats and effective, step-by-step solutions, demonstrated against real traffic and data. You will learn how to assess threats from internal clients, instrument networks to detect anomalies in outgoing traffic, architect networks to resist internal attacks, and respond effectively when attacks occur. Bejtlich's The Tao of Network Security Monitoring earned acclaim as the definitive guide to overcoming external threats.Now, in Extrusion Detection, he brings the same level of insight to defending against today's rapidly emerging internal threats. Whether you're an architect, analyst, engineer, administrator, or IT manager, you face a new generation of security risks. Get this book and protect yourself. Coverage includes *Architecting defensible networks with pervasive awareness: theory, techniques, and tools *Defending against malicious sites, Internet Explorer exploitations, bots, Trojans, worms, and more *Dissecting session and full-content data to reveal unauthorized activity *Implementing effective Layer 3 network access control *Responding to internal attacks, including step-by-step network forensics *Assessing your network's current ability to resist internal attacks *Setting reasonable corporate access policies *Detailed case studies, including the discovery of internal and IRC-based bot nets *Advanced extrusion detection: from data collection to host and vulnerability enumeration About the Web Site Get book updates and network security news at Richard Bejtlich's popular blog, taosecurity.blogspot.com, and his Web site, www.bejtlich.net.
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