Forensics List at SecurityFocus (http://www.securityfocus.com/incidents)
A general purpose forensics discussion list. Subscription information available at the link.
Incident Response, Ken van Wyk and Richard Forno (O'Reilly), 2001
A concise guide to all the ins and outs of incident response. Information available from http://www.oreilly.com/catalog/incidentres/index.html.
Investigating Computer-Related Crime, Peter Stephenson (CRC Press), 1999
A resource tailored to the corporate security specialist who needs detailed information on investigating attacks. This book provides a thorough coverage of the technical and legal aspects of computer crime.