Manage BHO to protect your privacy
A BHO (Browser Helper Object) is a DLL module designed as a plugin for Microsoft's Internet Explorer web browser to provide added functionality.
Each time a new instance of Internet Explorer starts, it checks the windows registry for the following key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects
If Internet Explorer finds this key in the registry, it looks for a CLSID key listed below the key. The CLSID keys under Browser Helper Objects tell the browser which BHOs to load. Removing the registry key prevents the BHO from being loaded.
The BHO API exposes hooks that allow the BHO to access the Document Object Model (DOM) of the current page and to control navigation. Because BHOs have unrestricted access to the Internet Explorer event model, some forms of malware have also been created as BHOs
So if your computer is infected by malware-formed BHOs, your privacy, especially personal information will be stolen.
Bad or Good?
If you don't know whether the BHOs installed on your computer are bad or good, you can remove them all to protect your system and privacy.
To remove BHOs...