Two factor authentication roll outs seem to be are definitely a theme for the last week. LinkedIn announced on Friday (May 31) that they have now rolled out two factor authentication to help their user base protect their user’s profiles.
From LinkedIn:
Most internet accounts that become compromised are illegitimately accessed from a new or unknown computer (or device). Two-step verification helps address this problem by requiring you to type a numeric code when logging in from an unrecognized device for the first time. This code will be sent to your phone via SMS. When enabled, two-step verification makes it more difficult for unauthorized users to access your account, requiring them to have both your password and access to your mobile phone.
Turn on Two-step verification for your account now by going to Settings, selecting the Account tab and clicking Manage security settings option.
Here is their step by step process that they posted as well.
Source: Article Link
(Image used under CC from Adriano Gasparri)