Microsoft Corp. said Tuesday it has fixed another security flaw in its Internet Passport service. The flaw could allow hackers to hijack some older accounts. "Microsoft senior manager Jeff Jones said he believes no Passport account has been stolen. He declined to say how many people were at risk, but said the flaw affected only a small number of users who had created their accounts more than four years ago. As part of its repair efforts late Monday, Microsoft briefly prevented some Passport users from manually changing their passwords."
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