Most of the computer security white papers in the Reading Room have been written by students seeking GIAC certification to fulfill part of their certification requirements and are provided by SANS as a resource to benefit the security community at large. SANS attempts to ensure the accuracy of information, but papers are published "as is". Errors or inconsistencies may exist or may be introduced over time as material becomes dated. If you suspect a serious error, please contact firstname.lastname@example.org.
This paper examines the area of call eavesdropping in detail and outlines how the process of eavesdropping has changed as the PBX technology has evolved; it also suggests that the art of call eavesdropping may be easier than ever before.
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