Move responds to widespread criticism following naked celebrity photo leaks.
The price of a single share: $68.
Smartwatches and spectacles offer hackers new entry points.
Feature designed to connect you to existing contacts vulnerable to abuse.
Hackers said to be able to hijack web sessions and read emails.
Payments provider reportedly turned down $3bn acquisition offer.
Two in every three phones will be NFC-enabled by 2018.
Second such crash this month for auction site.