Its first wave whittling down to a single remaining defendant, Guyzar LLC has filed another 19 cases in its Texas campaign. Again, defendants run the gamut, from Forbes and The New York Times to Fitbit, from Groupon and Travelzoo to OmahaSteaks.com. A single patent (5,845,070) is asserted in the campaign; it generally relates to using a separate certification server to authenticate a first server without revealing confidential information. Guyzar accuses defendants of infringement through the use of the OAuth or OAuth 2 protocols to offer the ability to log in using an account from another service.