Facebook's "Like" Button Plugin and User Tracking: Stretching Outdated and Ambiguous Laws to Protect User Privacy
Journal of Business & Technology Law
Volume 17
Issue 1
Article 5
Facebook's "Like" Button Plugin and User Tracking: Stretching
Outdated and Ambiguous Laws to Protect User Privacy
David Brokaw
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Recommended Citation
David Brokaw, Facebook's "Like" Button Plugin and User Tracking: Stretching Outdated and Ambiguous
Laws to Protect User Privacy, 17 J. Bus. & Tech. L. 88 (2022)
Available at: https://digitalcommons.law.umaryland.edu/jbtl/vol17/iss1/5
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Facebook’s “Like” Button Plugin and User Tracking:
Stretching Outdated and Ambiguous Laws to
Protect User Privacy
DAVID BROKAW * ©
Abstract
With its 2020 decision in Davis v. Facebook, Inc. (In re Internet Tracking
Litigation),1 the Federal Court of Appeals for the Ninth Circuit addressed the social
media site’s ability to track its logged-out users’ internet history using browser
“cookies.”2 Browser cookies are small bits of data that are transmitted between
internet users and a website and in Davis, these cookies were sent to Facebook
when the users accessed any website that had a Facebook browser extension
“plugin,” even when the users were logged out of Facebook. 3
The data sent in those browser cookies gave Facebook unauthorized access to
information about the internet history of its users.4 Facebook was able to match
this information to user profiles and sold this user information to advertisers for a
profit.5 In Davis, the Ninth Circuit held that the putative plaintiff class had standing
to sue Facebook for unjustly profiting from the unauthorized use of their data, even
if they did not show any actual economic injury. 6 Also, the Ninth Circuit endorsed
one position in a circuit split, finding that the unauthorized tracking of user internet
©
David Brokaw, 1995-2021.
*
David Brokaw was a student at the University of Maryland Francis King Carey School of Law and an
Editor for the Journal of Business and Technology Law. David passed away during the summer of 2021, following
his second year of law school, and is survived by his parents, Peter and Laura Brokaw. This Case Note is being
published in David’s honor and in recognition of his contributions to both the Journal and Maryland Carey Law
community.
1. 956 F.3d 589 (9th Cir. 2020).
2. Id. at 595-96.
3. Id. at 596.
4. Id. at 596, 601.
5. Id.
6. Id. at 599.
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DAVID BROKAW
usage with browser cookies, as Facebook was doing, could violate the Federal
Wiretap Act.7
By recognizing that the unauthorized use of user internet data can give plaintiffs
standing for economic claims and can implicate the Federal Wiretap Act,8 the Ninth
Circuit’s decision in Davis could have broad ramifications on websites’ liability for
using cookies or internet plugins.9 This note will begin with the factual background
and procedural history of Davis, including a description of the technology Facebook
used to track the internet usage of its users.10 Then, this note will set forth the Ninth
Circuit’s analysis of the key issues raised by the plaintiff class on appeal, including
whether they had standing to bring their claims, and whether they sufficiently
pleaded their claims against Facebook for invasion of privacy, breach of contract,
and violation of the Federal Wiretap Act.11 Finally, this note will discuss the legal
impact of the decision in Davis and how it may affect future litigation over the
unauthorized use of user data by websites and social media companies. 12
I. The Case
“On April 22, 2010, Facebook launched [its] “Like” button [social plugin on
websites] outside of the Facebook domain.”13 An internet “plugin” is a program that
extends the functionality of an internet browser or other internet service. 14
Facebook’s “Like” button as well as other plugins extend the functionality of
websites on the internet by allowing users who click the plugin to not only share
content to Facebook from outside the Facebook website and indicate a “like” for
products posted to Facebook, but to also allow Facebook to track users visits to
these other websites with the Facebook widgets and plug-ins.15 The “Like” button
plugin was launched as part of Facebook’s “Open Graph” initiative, which was an
7. Id. at 608 (noting that a court following the First and Seventh Circuit Courts would adopt an
“understanding that simultaneous, unknown duplication and communication of GET requests do not exempt a
defendant from liability under the party exception[,]” while a court following the Third Circuit would adopt an
understanding that defendant website companies “were ‘the intended recipients’ of . . . duplicated GET
requests, and thus ‘[party] to [disputed] transmissions[.]’”).
8. Electronic Communications Privacy Act of 1986, Pub. L. No. 99-508, 100 Stat. 1848 (1986).
9. See infra Section III.
10. See infra Section I.
11. See infra Section II.
12. See infra Section III.
13. Brief for Plaintiffs-Appellants at 2, Davis v. Facebook, Inc. (In re Internet Tracking Litig.), 956 F.3d 589
(9th Cir. 2020) (No. 17-17486).
14. Davis v. Facebook, Inc. (In re Internet Tracking Litig.), 956 F.3d 589, 596 n.1 (9th Cir. 2020).
15. Bill Goodwin & Sebastian Klovig Skelton, Facebook’s Privacy Game – How Zuckerbuerg Backtracked on
Promises
to
Protect
Personal
Data,
COMPUTERWEEKLY.COM
(July
1,
2019),
https://www.computerweekly.com/feature/Facebooks-privacy-U-turn-how-Zuckerberg-backtracked-onpromises-to-protect-personal-data.
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Facebook’s “Like” Button Plugin and User Tracking
effort by Facebook to connect the social media service with other, outside websites,
envisioning a future where users could browse the web using their real identities
and “everything [can] be more personalized.”16
During the 24-hour period after Facebook launched the “Like” button, over one
billion internet users encountered the plugin online.17 By the end of April 2010, over
50,000 websites featured the “Like” button plugin, and that September Facebook
announced that over 2 million different websites were using its’ plugin.18 The reach
and ubiquity of the “Like” button plugin has only continued to grow, and less than
a decade later, in 2018, Facebook claimed the “Like” button plugin appeared on
over 8.4 million different websites.19
Browser cookies are simple text files shared between user web browsers and the
websites they use which contain unique user identification information and share
that information with the website.20 When Facebo (...truncated)