IPhone Plugged in to other iTunes and Info shared?

I'm now being a little bit paranoid, I just bought an iphone and just now my sister connected my iphone to his mac book with itunes and my phone just change the device name to her device name.
Then suddently there's alot of APP waiting to be installed in my phone, I manually deleted all.
Do you think there's any info shared with her?
When someone message me will it go to her aswell?

It depends who's account the iphone was synced with before she connected it to her computer. If your account was different than your sisters she could not have seen or see data in your iphone. It's just that your photos were exposed and if she copied them she could have it now. But first if all itunes gives you an option to sync the iphone and she definitely must have clicked on it.

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