Sarah Frier and Mark Gurman report:
Apple Inc. changed its App Store rules last week to limit how developers use information about iPhone owners’ friends and other contacts, quietly closing a loophole that let app makers store and share data without many people’s consent.
The move cracks down on a practice that’s been employed for years. Developers ask users for access to their phone contacts, then use it for marketing and sometimes share or sell the information — without permission from the other people listed on those digital address books.
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