By Graham Smith PUBLISHED: 04:16 EST, 15 June 2012 | UPDATED: 06:17 EST, 15 June 2012 Facebook is asking each of its more than 900million active users to provide it with their mobile phone number. The move is part of a drive to improve security on Facebook, and comes in the wake of much-publicised password hacks at other networking sites including LinkedIn and eHarmony. Millions of Facebook users have already seen a link at the top of their desktop news feed requesting them to follow 'simple security tips'. Security measure: Facebook is asking each of its more than 900million active users to provide it with their mobile phone number
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Move is part of a drive to improve security on Facebook
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It comes in the wake of password hacks at other networking sites including LinkedIn and eHarmony
LinkedIn
LinkedIn
However, it claims that the security update has nothing to do with the recent @placeholder hack.