Websites for the Tokyo and Osaka metro were purportedly attacked by a pro-Russian hacker gang.

In what looks to be a second day of cyberattacks against Japan, the websites of the Tokyo Metro Co. and the Osaka Metro Co. became unreachable on Wednesday evening. A hacker collective supporting Russia claimed credit on social media.

The assaults, which might have been carried out by Killnet, occur one day after the group took credit for attacks on websites belonging to the Japanese government.

On Wednesday at around 6:30 ....