Fregosa v. Mashable Inc.

District Court, N.D. California·Decided October 9, 2025·No. 3:25-cv-01094·Unknown

Opinion

DAWN FREGOSA, Case No. 25-cv-01094-CRB

Plaintiff, ORDER DENYING MOTION TO v. DISMISS

Docket No. 34 Defendant.

Plaintiff Dawn Fregosa brings this putative class action against Defendant Mashable, Inc. (“Mashable”) under the California Invasion of Privacy Act (“CIPA”), Cal. Penal Code §§ 630, et seq. Fregosa alleges that Mashable violated the Pen Register Act by embedding third-party trackers on its website. According to the Second Amended Complaint (“SAC”), these trackers unlawfully recorded users’ IP addresses and device identifiers and transmitted that data to third parties for advertising and profiling. Mashable moves to dismiss the SAC under Rule 12(b)(6), raising three arguments: (1) that the Pen Register Act applies only to person-to-person communications rather than general website activity; (2) that even if the Pen Register Act applies, Fregosa has not plausibly alleged a violation of the Act; and (3) that the rule of lenity requires dismissal because the Pen Register Act is ambiguous. For the reasons set forth below, each argument is unavailing. The statutory text, structure, and purpose, as well as recent decisions from this District, establish that CIPA’s pen register prohibition extends to software processes that record addressing information plausibly alleges installation of trackers and use of resultant information by Mashable, and no grievous ambiguity warrants applying the rule of lenity. Accordingly, the motion to dismiss is DENIED. A. Factual Background Defendant Mashable owns and operates a digital news and entertainment website. Second Am. Compl. (SAC) (Dkt. 30) ¶ 1. Plaintiff Dawn Fregosa is a California resident who regularly visited Mashable’s website between 2017 and December 2024. SAC ¶ 187. Fregosa alleges that when she visited the Mashable website from her home in California, Mashable’s servers instructed her browser to install and run third-party trackers operated by Microsoft, Wunderkind, and PubMatic. SAC ¶¶ 2–6. These trackers collect users’ IP addresses and “device fingerprints” (device type, browser type, persistent identifiers) enabling cross-site recognition and targeted advertising. Id. Third parties operate these trackers and use them to engage in targeted advertising based on website visitors’ location (which can be determined by IP address) and browsing data. Id. Fregosa describes the mechanics of website tracking broadly as follows: when a user loads the Mashable webpage, the user’s browser sends an HTTP request to Mashable’s server. Id. ¶¶ 22–24. The server responds with instructions on how to properly display the website (e.g., what images to load, the text to display, music to play, etc.). Id. As part of this process, Mashable’s servers also send instructions to browsers that install trackers on the user’s browser. Id. ¶ 24. These trackers, supplied by Microsoft, Wunderkind, and PubMatic, prompt the browser to transmit identifying information — including the user’s IP address and device metadata — to the third parties. Id. The trackers enable those entities to recognize the same device on subsequent visits, whether to Mashable’s site or to other websites that deploy their code. Id. The SAC further alleges that Mashable and these third-party operators actively participate together in the broader data-brokerage and online advertising ecosystem. Id. ¶¶ 57–186. telephone numbers by capturing “dialing, routing, addressing, or signaling information.” She alleges that the trackers here perform the same functional role by recording addressing information associated with outgoing HTTP requests, and that Mashable “installed” and “used” those trackers without first obtaining a court order as required by CIPA. Id. ¶¶ 49– 56; see Cal. Penal Code § 638.51(a) (“[A] person may not install or use a pen register or a trap and trace device without first obtaining a court order . . . .”). B. Procedural History Fregosa’s First Amended Complaint was dismissed for lack of personal jurisdiction, with leave to amend. Dkt. 12; 19. Fregosa filed her SAC with expanded jurisdictional allegations and additional detail about Mashable’s contacts with California. Fregosa seeks to represent a class defined as “all California residents who accessed the Website in California and had their IP address collected by the Trackers.” Id. ¶ 211. Mashable does not challenge jurisdiction this time. See MTD (Dkt. 34). Mashable instead moves to dismiss solely under Rule 12(b)(6), arguing that the SAC fails to state a claim under CIPA § 638.51. C. Statutory Framework CIPA was enacted to protect Californians’ privacy rights. See Cal. Penal Code § 630. The chapter contains several distinct provisions regulating different types of surveillance. At issue here is the Pen Register Act, codified at §§ 638.50–638.55. The Pen Register Act prohibits the installation or use of a pen register or trap-and-trace device without first obtaining a court order or user consent. Cal. Penal Code § 638.51(a)–(b). CIPA provides a private right of action with statutory damages of $5,000 per violation or three times the amount of actual damages, whichever is greater, as well as injunctive relief. Cal. Penal Code § 637.2. The Act defines a “pen register” broadly as “a device or process that records or decodes dialing, routing, addressing, or signaling information transmitted by an instrument or facility from which a wire or electronic communication is transmitted, but not the and trace device” is similarly defined as a process that captures incoming addressing information. Cal. Penal Code § 638.50(c). Historically, these terms described devices attached to telephone lines that recorded outgoing or incoming phone numbers dialed. But more recent litigation in this district has tested whether software trackers embedded in websites qualify as “pen registers” when they collect users’ IP addresses, device identifiers, and browsing data. Several judges in this district, including Judges Lin, Orrick, Pitts, Ryu, Tigar, and the undersigned, have held that such allegations suffice at the pleading stage. See, e.g., Shah v. Fandom, Inc., 754 F. Supp. 3d 924 (N.D. Cal. 2024) (Lin, J.) (holding that courts should focus “less on the form of the data collector and more on the result” and that trackers are “at least a ‘process’ because it is ‘software that identifies consumers, gathers data, and correlates that data”); Mirmalek v. L.A. Times Commc’ns LLC, No. 24-cv-1797-CRB, 2024 WL 5102709 (N.D. Cal. Dec. 12, 2024) (Breyer, J.) (Courts cannot ignore the “expansive language in the California Legislature’s chosen definition [of pen register]” which is “vague and inclusive as to the form of the collection tool (i.e., ‘device or process’)”) (brackets in original); In re Meta Pixel Tax Filing Cases, No. 22-cv-07557-PCP, 2025 WL 2243615 (N.D. Cal. Aug. 6, 2025) (Pitts, J.); Gabrielli v. Haleon US Inc., No. 25-cv-02555-WHO, 2025 WL 2494368 (N.D. Cal. Aug. 29, 2025) (Orrick, J.); Garon v. Keleops USA, Inc., No. 25-cv-02124- DMR, 2025 WL 2522374 (N.D. Cal. Sept. 2, 2025) (Ryu, J.); Riganian v. LiveRamp Holdings, Inc., No. 25-cv-00824-JST (N.D. Cal. July 18, 2025) (Tigar, J.). Courts in the District have emphasized that the inclusion of the term “process” in the definition of a pen register was intended to extend the statute’s reach beyond physical telephone hardware to include software tools that carry out materially similar functions. See Mirmalek v. L.A. Times Commc’ns LLC, No. 24-cv-01797-CRB, 2024 WL 5102709, at *3 (N.D. Cal. Dec. 12, 2024) (denying motion to dismiss and stressing the “vague and inclusive” language in the statute’s definition of “pen register”). dismiss and its reply brief in support of its motion to dismiss. Dkt. 35, Dkt. 40. The first request is for the court to take judicial notice of four exhibits, all of which are California superior court orders dismissing CIPA pen register claims: Sanchez v. Cars.com Inc., No. 24STCV13201, 2025 WL 487194 (Cal. Super. Jan

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