
116 Chapter 4 • Real Spyware—Crime, Economic Espionage, and Espionage
E-mail filtering service providers, such as MailFrontier and MessageLabs,
provide heuristics filtering that analyzes e-mails for a wide range of phishing
attack characteristics v^hich yield a percentage of confidence that the e-mail is
or is not a phishing attack or spam. Web filtering products and services such
as Websense protect an enterprise by blocking access to known phishing sites
or sites that exhibit phishing characteristics.
Bot Detection
Botnets can be difficult to detect on a compromised host, but recently,
Portland State University's Jim Binkley, a PSU professo ...