Apple’s iMessage app appears to be giving the U.S. Drug Enforcement Agency real problems because they are not able to trace and track text message conversations lie conventional SMS. When Apple’s iMessage was announced in mid-2011, Cupertino said it would use “secure end-to-end encryption” and sure enough messages sent between two Apple devices are encrypted communication and cannot be intercepted.  iMessage protocol is actually on Apple push notifications (APNS) – a proprietary protocol. An…

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