Following a major security vulnerability that let attackers reset your Apple ID password using only your email address and date of birth, Apple responded in March by fixing the iForgot hole and bolstering Apple ID account security with an optional new two-step verification process for Apple ID accounts in the United States, United Kingdom, Australia, Ireland, and New Zealand.
Today, the company has started to roll out the feature to nearly a dozen additional countries, including Canada, Russia and Brazil...