What is the test for standing in an action under the California Unfair Competition Act?

The unfair competition statutes come with an express standing requirement, however. An action can be brought only "by a person who has suffered injury in fact and has lost money or property as a result of the unfair competition." ( 17204.) It is not enough that a plaintiff lost money; to have standing, there must be a causal link between the unlawful practice and the loss. ( Hall v. Time, Inc. (2008) 158 Cal.App.4th 847, 849, 70 Cal.Rptr.3d 466 ["We hold the phrase as a result of in the [Unfair Competition Law] imposes a causation requirement; that is, the alleged unfair competition must have caused the plaintiff to lose money or property."].)