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EPIC v. AccuWeather

Challenging the unlawful collection, use, and disclosure of personal location data by AccuWeather through its mobile iOS App


On March 16, 2018, EPIC filed a consumer protection lawsuit against AccuWeather International, Inc. alleging that the company engaged in unlawful and deceptive practices in tracking consumers’ locations. Specifically, EPIC alleged that AccuWeather tracked the location of consumers who had expressly opted out of location tracking. EPIC also alleged that AccuWeather misled consumers when it sent their personal location data to third-party companies for targeted advertising. EPIC alleges that these practices violated the District of Columbia Consumer Protection Procedures Act (DC DCPPA).

Factual Background

AccuWeather is one of the world’s largest weather media companies. It offers a weather app for mobile devices that provides local weather updates.

Revelation of AccuWeather’s Tracking Practices in 2017

On August 17, 2017, a security researcher discovered that AccuWeather was tracking consumers location in the background even when they had disabled location services. Specifically, AccuWeather was collecting and disclosing the unique identification number of the nearby WiFi router that an iPhone user was connected to. This Basic Service Set Identifier (BSSID) data can be used to track the location of a consumer based on widely available maps of WiFi devices.

The researcher also discovered that when AccuWeather was given permission to access personal location data on the iPhone, the company was also disclosing the consumer’s geographic coordinates, including latitude, longitude, altitude and speed, to a company called Reveal Mobile, Inc. Reveal markets itself as a “mobile analytics platform” that can increase ad revenue for app publishers like AccuWeather by facilitating location-based targeted ads. The researcher found that even when he denied AccuWeather permission to access his location, the company still disclosed his Wi-Fi BSSID to Reveal.

AccuWeather’s Representations in 2017

Prior to this revelation, AccuWeather did not disclose any of these practices to consumers. When consumers opened the app for the first time, AccuWeather displayed the following in-app notification:

AccuWeather notification 2017

And even when consumers selected “Don’t Allow,” AccuWeather was still tracking their location by collecting WiFi data and sending that information to Reveal. More precisely, AccuWeather integrated Reveal’s software into its app and programmed the software to collect the consumers BSSID data.

AccuWeather also did not disclose to consumers that when they selected “Allow” location access, the company was sending their personal location data to Reveal for targeted advertising. AccuWeather gave consumers the false impression that it was collecting their location only for in-app uses (i.e. to “alert you to severe weather in your area, provide critical updates, make the app launch faster, and more!”).

Researcher discovery of AccuWeather tracking

AccuWeather’s Response in 2017

Following public outcry over the location tracking discovery, AccuWeather issued a response, stating “if a user opts out of location tracking on AccuWeather, no GPS coordinates are collected or passed.” (emphasis added). This response did not address the location tracking using WiFi data. As one reporter noted at the time, “claiming this is about GPS coordinates is like if they were caught stealing debit cards and they issued a denial that they never stole anyone’s cash.” In fact, AccuWeather admitted that “Wi-Fi network information … was for a short period available on the Reveal SDK.”

AccuWeather’s Location Tracking in 2018

Although AccuWeather removed Reveal Mobile’s software from the current version of its app, the company continued in 2018 to collect, use, and disclose consumers’ personal location data to third parties for targeted advertising purposes. In the 2018 version of the app, AccuWeather stated that for consumers who grant permission under the Location Services “Always” option, the company will collect, use, and disclose location data to third parties for targeted advertising. But AccuWeather explicitly omits those terms for consumers who only grant permission for Location Services “While Using the App.” These statements indicated that consumers will not have their personal location data used or disclosed for advertising purposes when they grant “While Using the App” permissions.

AccuWeather location services always AccuWeather location services while using the app AccuWeather location services never

In fact, AccuWeather continued in 2018 to use and disclose consumers’ personal location data to third party advertisers even when they are only given permission to access location “While Using the App.”

Changes to AccuWeather’s Location Tracking Practices Following EPIC's Suit

After EPIC filed its suit against AccuWeather in 2018, the company overhauled their app and changed their location tracking practices. One of the key changes in the current AccuWeather app is the separation of location services controls for functional vs. advertising purposes.

AccuWeather location services always AccuWeather location services while using the app AccuWeather location services never

In addition to changing the user location data authentication process and controls, AccuWeather also added new data access and deletion controls.

AccuWeather location services always AccuWeather location services while using the app AccuWeather location services never

These types of changes are necessary to put users in control of their cell phone location data. It is not appropriate for a mobile app to collect, use, or disseminate location data for non-functional purposes based solely on a user giving location permissions to enable the functions of the app.

EPIC’s Complaint

EPIC filed suit against AccuWeather under the District of Columbia Consumer Protection Procedures Act (“DC CPPA”) for its false and misleading statements regarding location tracking. Section 28-3905(k)(1)(C) of the DC CPPA allows a nonprofit organization to bring suit “on behalf of the general public.” EPIC alleged that AccuWeather’s collection of location data from consumers who had expressly opted out of location tracking violated § 28-3904(e) of the DC CPPA, which makes it unlawful to “misrepresent as to a material fact which has a tendency to mislead.” EPIC also alleged that AccuWeather’s failure to disclose that it was sending consumers’ location data to third parties for targeted advertising violated § 28-3904(f), which makes it unlawful to “fail to state a material fact if such failure tends to mislead.”

EPIC asked the court to enjoin AccuWeather from tracking consumers’ location or transmitting their location to third parties without clearly and prominently disclosing it and obtaining consumers’ affirmative consent.

EPIC’s Interest

EPIC has a strong interest in the protection of personal location data—particularly where an app company is defying user preferences to secretly track them. EPIC has submitted numerous complaints to the FTC and filed numerous amicus briefs around the issues of location privacy and the monetization of user data. EPIC also maintains a comprehensive webpage on location privacy.

FTC Complaints

In re: Uber Privacy Policy: EPIC submitted a complaint to the FTC regarding Uber’s myriad abuses of consumer privacy. Specifically, EPIC alleged that Uber deceptively changed its privacy settings to enable its app to track users while the app was not in use, misrepresented users’ ability to opt out of targeted advertising, failed to protect user data, and did not monitor its employees misuse of personal data. As a result of EPIC’s complaint, the FTC filed a formal complaint against Uber and entered into a settlement agreement with the company that required it to implement a comprehensive privacy program.

Google Purchase Tracking: EPIC filed an FTC complaint regarding Google’s Google’s “Store Sales Measurement,” which correlates in-store credit card transactions with online advertising clicks, enabling Google to track when a consumer clicked on an ad and subsequently made an in-store purchase. EPIC’s complaint challenged Google’s deceptive claim “that consumers can opt out of Google tracking their in-store purchases,” as well as Google “not revealing the identities of its third-party partners.”

EPIC Amicus Briefs

Carpenter v. United States: EPIC filed an amicus brief with the United States Supreme Court in a case concerning the Fourth Amendment and location data. The question presented was whether the warrantless seizure and search of historical cell-phone records revealing the location and movements of a cell-phone user over the course of 127 days is permitted under the Fourth Amendment. EPIC urged the Supreme Court to extend Constitutional protection to cell phone location data.

Riley v. California: EPIC and twenty-four legal scholars and technical experts argued to the Supreme Court that the Fourth Amendment protects the privacy of an individual’s cell phone in a search incident to arrest. The Supreme Court unanimously sided with EPIC, holding that a warrant is required to search a cell phone. The Court twice cited EPIC’s brief in its opinion.

United States v. Jones: EPIC submitted an amicus brief to the Supreme Court in a case concerning the warrantless tracking on a suspect’s vehicle using a GPS device. The Supreme Court unanimously held that the Fourth Amendment requires a warrant to track a vehicle using GPS.

Ben Joffe v. Google: Google was allegedly using its Street View project to intercept vast amounts of Wi-Fi data from nearby home networks. EPIC filed an amicus brief with the Ninth Circuit Court of Appeals arguing that Wi-Fi communications are not exempt from protection under the Wiretap Act. The Ninth Circuit agreed and held that the wiretap exception for access to "radio communications" does not apply to Wi-Fi networks.


Legal Documents

  • EPIC v. AccuWeather, No. 2018 CA 001870 B (D.C. Super. Ct. filed Mar. 16, 2018)


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