A Russian hacker group in a statement released on the dark web has claimed responsibility for the cyberattack that caused a system glitch at Japanese office and household goods seller Askul, sources said Friday. Askul said it is "aware of this statement" and is "currently working to verify the facts." The statement by the group, which calls itself "RansomHouse," was found by those including information security service provider S&J on Thursday night. The group claimed that it stole some 1.1