Yahoo! Search Protection is an application made available by Yahoo! for users who wish to set Yahoo! as their default search engine. It is only available to users with Internet Explorer (as of 2011), and it is only compatible with versions 6 and 7. It can be enabled and disabled at your discretion any time after installation.
Yahoo! Search Protection is an application designed to protect the security of search engine settings. A search engine is a set of computer programs that creates an index of searchable programs and consults said index to provide results based on the parameters of a search inquiry. Search engines can exist in general and specialized formats.