Is Lost iPhone Data Protection Better on iOS 7 active Apple devices?

Is Lost iPhone Data Protection Better on iOS 7 active Apple devices?

Added (1). From a data privacy point of view. That is, if I lose my iPhone, can I be sure that all my contacts, pictures, messages and other confidential data won't be misused by anyone who finds it (and decides not to return it)?

What do you mean by that? You as the user of the phone have to make some kind of effort to keep your information safe. If the phone wipes out you had better already have something planned.

I use icloud for my personal content. I know it doesn't back up photos permanently and therefore take precautions.

Lost iPhone & iOS 7: http://tabletsecurity.ellsed.com/1/post/2013/11/lost-iphone-ios-7-protects-your-data-even-when-your-iphone-is-stolen-and-gone-forever.html

So long as you have an iCloud account and Apple ID, you have ways of either retrieving your iPhone or locking it up if it's unrecoverable.

Sure, as a mobile operating system, iOS 7 is more secure and supports Apple's trademark enhancements to data protection. It may not be obvious at first but you need to dig into the interface to uncover the hidden gems. But this is limited largely to software security.

As far as your lost or stolen iPhone is concerned (the hardware device itself), you can remote wipe it and prevent activation so that the thief can't sell your phone or use it himself.