Yahoo Japan released a statement on Friday that a file with 22 million login names may have been exposed, InformationWeek reports. “We don't know if the file was leaked or not, but we can't deny the possibility, given the volume of traffic between our server and external terminals,” the statement notes. The company has posted information related to the breach on its homepage and is contacting those affected, the report states, noting the unauthorized access was discovered on Thursday and could affect 10 percent of the company’s user base.
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