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22 million Yahoo! Japan accounts might be stolen


Yahoo! Japan is the most popular search engine of Japan toady. Having a 50 percent market share, 10 percent ahead of rival Google.

The administration of Yahoo! Japan has said, a file of 22 million ID’s might be stolen during an unauthorized attempt to access its system.

“We don’t know if the file (of 22 million user IDs) was leaked or not, but we can’t deny the possibility given the volume of traffic between our server and external terminals,” Yahoo! Japan said in a statement.

In a report by ChannelNewsAsia, the file did not include passwords or data to verify a user’s identity or reset passwords. It added that, the company had already updated its security to prevent the same incident.


Yahoo Japan is 34.7 percent held by US Internet giant Yahoo! Inc and 35.5 percent held by Japan’s mobile phone operator SoftBank.

About Clifford Trigo

I am Clifford Trigo a proud Boholano / Pinoy / Filipino Web App Security Researcher. Day by day, I'm learning new things :)) Visit my Hackerone Profile, currently at top 2 overall :D