Browser Helper Object (BHO)

A BHO is a small program that extends Microsoft's Internet Explorer. When you open Internet Explorer, you automatically start the browser helpers that have been downloaded with the browser.

Examples of BHO usage include visible add-on toolbars in IE, but can also be hidden functions. Adware and Spyware as well as browser hijackers often use BHOs to display ads or follow your moves across the internet, because a BHO has access to each URL you visit and can redirect you or display other pages than you requested (ads, for example).

If you have installed special toolbars or colorful ad-based extras to your IE browser, you are probably also downloaded a BHO to your computer.

BHOs often use ActiveX installation programs.

Browser Hijack Recover allows you to view or delete installed BHOs.

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