Sniffer

The name of the filter program used by the Infoseek search engine to prevent spamdexing. It detects multiple mirror pages, font and background spoofs, multiple title tags, keyword stuffing and possibly other types of spamdexing.

Software that observes and records network traffic.

[A] software tool for auditing and identifying network traffic packets. [INFOSEC-99] Note: An example of a sniffer is a packet sniffer.