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2 major web portals of Japan hacked, 100k accounts compromised

As reported by networkworld, two of Japan’s major web portals Yahoo! Japan and Goo, suffers data breaches earlier this week. It includes 100,000 user accounts from Goo and 1.27 million from Yahoo! Japan.


The attack to Yahoo is not successful as stated by their officials. Softbank, Yahoo! Japan owner said that it has discovered a malicious program that harvested information of users but they were able to stop it before the data was leak.

In Goo’s case, all 100,000 users were completely compromised through bruteforce with a speed of 30 attempts per second. NTT, its owner force to locked down the accounts. A measure to prevent further unauthorized login, they also urge customers to have strong passwords.

In the meantime, Yahoo! Japan is working to prevent reoccurrence while Goo increases monitoring of breaches.

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