Business this week

Joe Biden held a summit at the White House with the chief executives of America’s biggest tech, financial and infrastructure companies to discuss cyber-security. Those attending included Tim Cook of Apple (pictured), Satya Nadella of Microsoft and Jamie Dimon of JPMorgan Chase. Criminal hackers have attacked several critical infrastructure- and software-systems this year. Mr Biden urged companies to help fill the half a million job vacancies in cyber-security.