those which may not. For example, if a court order provides for the lawful interception of one type of communication (e.g., e-mail), but excludes all other communications (e.g., online shopping) the Carnivore tool can be configured to intercept only those e-mails being transmitted either to or from the named subject. ... [it] is a very specialized network analyzer or "sniffer" which runs as an application program on a normal personal computer under the Microsoft Windows operating system. It works by "sniffing" the proper portions of network packets and copying and storing only those packets which match a finely defined filter set programmed in conformity with the court order. This filter set can be extremely complex, and this provides the FBI with an ability to collect transmissions which comply with pen register court orders, trap & trace court orders, Title III interception orders, etc.... ...It is important to distinguish now what is meant by "sniffing." The problem of discriminating between users' messages on the Internet is a complex one. However, this is exactly what Carnivore does. It does NOT search through the contents of every message and collect those that contain certain key words like "bomb" or "drugs." It selects messages based on criteria expressly set out in the court order, for example, messages transmitted to or from a particular account or to or from a particular user. After prolonged negative coverage in the press, the FBI changed the name of its system from "Carnivore" to the more benign-sounding "DCS1000." DCS is reported to stand for "Digital Collection System"; the system has the same functions as before. Successor The Associated Press reported in mid-January 2005 that the FBI essentially abandoned the use of Carnivore in 2001, in favor of commercially available software, such as NarusInsight, a mass surveillance system. A report in 2007 described the successor system as being located "inside an Internet provider's network at the junction point of a router or network switch" and capable of indiscriminately storing data flowing through the provider's network. See also Other FBI cyber-assets: COINTELPRO: a series of covert and illegal FBI projects aimed at surveilling, infiltrating, discrediting, and disrupting American political organizations DWS-EDMS: an electronic FBI database; its full capabilities are classified but at a minimum, provides a searchable archive of intercepted electronic communications, including email sent over the Internet DITU: an FBI unit responsible for intercepting telephone calls and e-mail messages DCSNet: