A hacker is advertising what he says is more than one hundred million LinkedIn logins for sale.The IDs were reportedly sourced from a breach four years ago, which had previously been thought to have included a fraction of that number.At the time, the business-focused social network said it had reset the accounts of those it thought had been compromised.LinkedIn now plans to repeat the measure on a much larger scale.One expert said the service should have reset all its accounts the first time round.LinkedIn is often used to send work-related messages and to find career opportunities – activities its members would want to stay private.Criminals could make use of this information or see if its subscribers had used the same passwords elsewhere. Read full article