The move from LinkedIn follows about a year after it was hacked in June 2012.
Social networking site LinkedIn has introduced two-step verification to improve the security of its members’ accounts.
The process requires users to type a numeric code when logging in from an unrecognised device for the first time.
LinkedIn said the code will be sent to user’s phone through SMS and when enabled, two-step verification makes it more difficult for unauthorised users to access a particular account, which requires them to have both password and access to mobile phone.
The new two-step verification process follows about a year after LinkedIn was hacked in June 2012, with as many as 6.5 million passwords were exposed.
Recently, Twitter introduced an optional ‘two-factor authentication’ feature using mobile phone verification on the social network, as part of its efforts to beef up security after a series of high-profile breaches into its accounts in recent past.
Apple has also added a new level of security to iCloud and Apple ID accounts which requires two-step verification to prevent passwords from being stolen.