Canadian Group Looks Closely at Deep Packet Inspection
The Canadian Internet Policy and Public Interest Clinic (CIPPIC) raised questions about the privacy impact of widespread use of deep packet inspection (DPI). This technique involves the inspection of the contents of packets as they are transmitted across computer networks. DPI is sometimes referred to as "complete packet inspection." DPI can be used to determine the contents of all unencrypted data transferred over a network.
Deep packet inspection under assault over privacy concerns Ars Technica, May 12, 2008