22M accounts exposed in Yahoo Japan breach

Share this article:
Trojan uses fake Adobe certificate to evade detection
Trojan uses fake Adobe certificate to evade detection

A breach at Yahoo Japan, the most visited website in the country, may have exposed up to 22 million user login names.

Yahoo said in a news release that on Thursday it discovered an unauthorized access to its ID servers, as well as a file hosting the login names. The company said it “can't deny the possibility” that the file was transferred.

Although login names are public information, as an added precaution, the company has urged users to change their passwords, as well as use an added tool on its home page that allows them to check if their login ID has been placed at risk as a result of the incident.

In 2012, Yahoo made headlines after hackers stole about 400,000 usernames and passwords of members who belong to the company's Contributor Network.

Share this article:

Sign up to our newsletters

More in News

Latest Citadel trick allows RDP access after malware's removal

Latest Citadel trick allows RDP access after malware's ...

Trusteer, an IBM company, said the new Citadel configuration was detected this month.

Cryptoblocker variant emerges, encryption differs from CryptoLocker

Trend Micro has detected a variant of CryptoLocker in the wild that relies on the advanced encryption standard.

Jimmy John's sandwich chain investigating possible breach

Some financial institutions have indicated that credit cards recently used at Jimmy John's locations have been used to make fraudulent purchases.