= Killbit
{wiki=Killbit}
The term "Killbit" refers to a security mechanism used in Microsoft Windows operating systems, primarily to disable specific ActiveX controls that have been found to be vulnerable or pose a security risk. When a particular ActiveX control is deemed unsafe or a potential attack vector, Microsoft can issue a "kill bit" for that control. This is accomplished by setting a registry key that effectively disables the control in Internet Explorer and other applications that utilize ActiveX technology.
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