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Null DACLs and Empty DACLs

If the discretionary access control list (DACL) that belongs to an object's security descriptor is set to NULL, a null DACL is created. A null DACL grants full access to any user that requests it; normal security checking is not performed with respect to the object. A null DACL should not be confused with an empty DACL. An empty DACL is a properly allocated and initialized DACL that contains no access control entries (ACEs). An empty DACL grants no access to the object it is assigned to.

For an example of how to create a DACL, see Creating a DACL.

 

 

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