A Killnet video declaring war against the Japanese government. (Image from video screen capture) © Kyodo September 8, 2022 03:41 JST | Japan Copy Copied TOKYO (Kyodo) — The Tokyo Metro and Osaka Metro's websites were rendered inaccessible on Wednesday evening in what appears to be a second day of cyberattacks on Japan, with a pro-Russia hacker group claiming responsibility on social media. The attacks, which may have been perpetrated by Killnet, come a day after the group claimed responsibility for assaults on Japanese government websites. At around 6:30 p.m. on Wednesday, Killnet wrote on messaging app Telegram that it…