Yahoo Japan Breach Exposes 22M User Logins

Law360, New York (May 20, 2013, 8:56 PM EDT) -- Yahoo Japan Corp. said Friday that hackers who recently infiltrated its systems might have stolen up to 22 million user IDs, marking the second attempt by outside intruders since the beginning of April to access data on Yahoo users in the country.

In a statement released by Yahoo Japan, the company revealed that it had detected an unauthorized attempt to access the administrative system of its Web portal site Thursday and immediately cut net access. However, because of the volume of traffic between its server and...
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