someone backed up my iphone, using his laptop. he did it with the purpose of transfering all my data on my new iphone. is it possible that he can access my data:photos, messages,etc, from his laptop now?

Hi

Just change your Apple id Password.

You could have just backup old iPhone to iCloud Over your wifi

Set up new iPhone over wifi Then when it asks you if you want to use iCloud backup Say yes to get your apps and data back.

You can do almost everything over your wifi I haven't use pc for 3 years for

Apple devices everything done over wifi.

Cheers

Brian

If he has his own iOS device, yes, he could just restore that backup to his device and he'd have a mirror of your device to use. Unless this was an encrypted iTunes backup, it will not contain any of your passwords, health or other sensitive personal data in it. But it will have whatever was in your camera roll at the time, your iMessage and SMS texts, notes in any local notes app storage, etc.

There are also windows and OS X tools to parse and see the data in an unencrypted iTunes backup file. Why did you ever allow this person to do this if you do not trust them or did not have control over the process to delete the backup once done?

Here's a support article with an overview of iTunes & iCloud backups as well as links with details on how to do each:

iTunes and iCloud backups

Here is a support article that tells you how to restore to a backup if needed:

Restore from an iCloud or iTunes backup - Apple Support

Cheers,

GB

There is no way to know if it was encrypted. That is set when the backup is done, so only he would know that.

For future reference, you should look at doing your own iCloud backups rather than providing your phone to someone who you don't want to have access to your info. Again, he is not going to be able to see any of your info just based on the backup, but if he decides to erase an iOS device of his own and then back it up with the back from your device, then he will have access to any data that was backed up, which would include your Whatsapp conversations.

GB

Lorenaaria wrote:

But as I know he needs my apple id password in order to be able to back up another iOS device with my data,right?

No, he doesn't. Once the backup is out there, it can be used to restore any device that is hooked up to iTunes. An iCloud backup restore requires an Apple ID and password. An iTunes backup restore does not.

Sorry,

GB

That is because your Apps and purchases are tied to your AppleID, and since your device had never been backed up to that computer before, iTunes needed to authenticate your AppleID to backup the contents (apps themselves are not part of a backup, but the list of installed apps to be re-installed on restore is, plus their folder locations and layout). But it would still backup to a file on the laptops hard drive, not to iCloud.

The activation steps are normal for a lot of things (if you used your fingerprint as a proxy with an app, say your banking app, you would also need to reset that app's setting as well after a restore of a backup). So while someone using your backup would not be able to sign in to WhatsApp as you, they may still be able to read any information that was stored locally in the WhatsApp app (I don't know for sure as I've never used WhatsApp, so don't know what it stores locally versus sync's in real time).

Unless you or he turned on encrypted backup and entered (twice) a password for it, then it would be an unencrypted backup. As I mentioned, that at least does not include any of your passwords, health data or other personal/sensitive data.

You mentioned nothing about a restore - only a backup. So, you erased your device?

Passwords may be required to download apps that were on the device but not in the library, or to sign into iCloud, those can be skipped (unless you are restoring from an iCloud backup which would require your Apple/iCloud ID and password to even access the backup). However, if your device was hooked up to iTunes, then he did an iTunes backup.

GB

It doesn't matter what was required to do the backup, the point is that no Apple ID or password is required to restore an iOS device to that iTunes backup.

GB