UPDATE: On December 31, 2019, the Ninth Circuit released an amended opinion in Enigma Software Group USA, LLC v. Malwarebytes, Inc., No. 17-17351 (9th Cir. Dec. 31, 2019). The case also involves competing providers of filtering software and issues concerning the scope of CDA §230(c)(2). In reversing the lower court’s dismissal of claims under the CDA, the Ninth Circuit held that “the phrase ‘otherwise objectionable’ does not include software that the provider finds objectionable for anticompetitive reasons.”

Three recent court decisions affirmed the robust immunity under the Communications Decency Act (CDA), 47 U.S.C. §230(c), for online providers that host third-party content: the Second Circuit’s decision in Herrick v. Grindr LLC, No. 18-396 (2d Cir. Mar. 27, 2019) (summary order), the Wisconsin Supreme Court’s opinion in Daniel v. Armslist, LLC, No. 2017AP344, 2019 WI 47 (Wis. Apr. 30, 2019),  and the Northern District of California’s decision in P.C. Drivers Headquarters, LP v. Malwarebytes Inc., No. 18-05409 (N.D. Cal. Mar. 6, 2019).