A A class action lawsuit has been filed against DoubleClick Inc., alleging that the company deceptively and fraudulently commandeered millions of Internet users to the commercial websites of DoubleClick's customers through the dissemination of tens-of-millions of fraudulent Internet advertising banners that impersonated computer error messages. The Complaint states that through use of such Fake User Interface ("FUI") dialogs that gave the false appearance of being computer error messages, DoubleClick tricked millions of Internet users into interrupting the work they were performing to respond to the fraudulent error message, only to unexpectedly find both computer and computer user thus hijacked to the commercial websites of DoubleClick's customers. Inc., alleging that the company deceptively and fraudulently commandeered millions of Internet users to the commercial websites of DoubleClick's customers through the dissemination of tens-of-millions of fraudulent Internet advertising banners that impersonated computer error messages. The Complaint states that through use of such Fake User Interface ("FUI") dialogs that gave the false appearance of being computer error messages, DoubleClick tricked millions of Internet users into interrupting the work they were performing to respond to the fraudulent error message, only to unexpectedly find both computer and computer user thus hijacked to the commercial websites of DoubleClick's customers.