Facebookobtained personal and sensitive device data on about 187,000 users of its now-defunct Research app, which Apple banned earlier this year after the app violated its rules.
The social media giant said in a letter to Sen. Richard Blumenthal’s office — which TechCrunch obtained — that it collected data on 31,000 users in the U.S., including 4,300 teenagers. The rest of the collected data came from users in India.
Earlier this year, a TechCrunch investigation found both Facebook and Google were abusing their Apple-issued enterprise developer certificates, designed to only allow employees to run iPhone and iPad apps used only inside the company. The investigation found the companies were building and providing apps for consumers outside Apple’s App Store, in violation of Apple’s rules. The apps paid users in return for collecting data on how participants used their devices and to understand app habits by gaining access to all of the network data in and out of their device.
Apple banned the apps by revoking Facebook’s enterprise developer certificate — and later Google’s enterprise certificate. In doing so, the revocation knocked offline both companies’ fleet of internal iPhone or iPad apps that relied on the same certificates.
But in response to lawmakers’ questions, Apple said it didn’t know how many devices installed Facebook’s rule-violating app.
“We know that the provisioning profile for the Facebook Research app was created on April 19, 2017, but this does not necessarily correlate to the date that Facebook distributed the provisioning profile to end users,” said Timothy Powderly, Apple’s director of federal affairs, in his letter.
Facebook said the app dated back to 2016.
TechCrunch also obtained the letters sent by Apple and Google to lawmakers in early March, but were never made public.
These “research” apps relied on willing participants to download the a
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