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'Locationgate' implicated Google, Apple and Microsoft -- seemingly with only the BlackBerry manufacturer, Research in Motion, catching a lucky break.
iPhone devices, in a nutshell, collected location data which was stored unencrypted on iOS devices, which was available to anyone who could access the device. This kick started a mass furore over privacy, and the "third party" which was involved in the sharing of personal location data.
Apple put the problem down to a 'flaw' which was eventually patched in iOS 4.3.3, but not before the United States Senate got involved -- questioning Apple and Google alike on their privacy practices.