U.S. officials say a lengthy effort lies ahead to identify the extent of a suspected Russian hack on federal agencies and private companies, and to craft an appropriate response. “We’re just getting our arms around the scope of this cyber-compromise,” Christopher Krebs, former director of the U.S. Cybersecurity and Infrastructure Security Agency, or CISA, said on Sunday. Senator Mitt Romney said Russia “acted with impunity” in enacting the massive, cyber breach… – Bloomberg Photo: Gage Skidmore