In April 2011, data researchers discovered that Apple was collecting years of records of Wi-Fi network spots that users passed by with their iPhones -- essentially tracking their location -- even when users specifically instructed their phones not to collect that information.
As Apple often does in these situations, the company held off for about a week after the issue first blew up in the media before issuing any comment. Once Apple finally weighed in, it didn't exactly apologize.
In a Q&A on its website, Apple posted a question about why the iPhone continued to collect location data from users when they turned off location services. Answer: "It shouldn't. This is a bug, which we plan to fix shortly."
Apple also acknowledged that iPhones were failing to delete old location data. That too was a bug, Apple said: The data was supposed to be wiped after seven days.
Apple eventually fixed the bugs with a software update.