From AmateurPhotographer.co.uk:
"Nikon has advised D750 DSLR users to manually activate the security setting on Nikon’s Wi-Fi software app for mobile devices, to avoid the risk of unauthorised access to the camera’s images by a third party.AP technical editor Andy Westlake added:Amateur Photographer (AP)’s technical team has discovered a potential security flaw during their review of a full-production sample of the D750, which went on sale in the UK two days ago.
If users do not manually activate the Wi-Fi security settings, via the app, then they could expose the D750’s images to unauthorised access."
"If you have Wi-Fi turned on, anyone with a smart device and the Nikon Wireless Mobile Utility can connect to the camera and download images from the memory card without the owner’s permission."You can read the entire article on AmateurPhotographer.co.uk.