This week Microsoft has started rolling out Microsoft Two-Step
Security for online accounts and services, to help keep your account
more secure, and following other large could storage providers such as
Dropbox, Evernote, and Google.
The Microsoft Two-Step Security will be rolling out to accounts for
Windows Phone, Xbox, Outlook.com, Skype, SkyDrive and Office accounts,
making each one more secure.
"More than a year ago, we began bringing two-step verification
for certain critical activities, like editing credit cards and
subscriptions at commerce.microsoft.com and xbox.com, or accessing files
on another one of your computers through SkyDrive.com. For these
scenarios, two-step verification is required 100 percent of the time for
everyone, given the sensitive nature of these tasks.”
"This Microsoft Two-Step Security release enables optional
two-step verification for your entire Microsoft account. Two-step
verification is when we ask you for two pieces of information anytime
you access your account — for example, your password plus a code sent to
a phone or email on file as security info.”
For more information on the new Microsoft Two-Step Security jump over to the Microsoft website for details.
Source: Hot Hardware : Win Source