By Riley Gutiérrez McDermid The boy’s father said they thought he was just busy playing video games. The leader of the group that hacked major tech giants Microsoft and Nvdia is allegedly a 16-year-old boy living with his parents near Oxford, England, authorities said Thursday. “I had never heard about any of this until recently,” the boy’s father told the British media. “He’s never talked about any hacking, but he is very good on computers and spends a lot of time on the computer. I always thought he was playing games.” The rash of attacks had raised fears that Russian President Vladimir Puti…