Latest: UK among 11 countries hit by large-scale cyber attack

Latest: At least 16 hospitals in the UK's National Health Service have been targeted by a large cyber attack.

Update - 7.45pm: At least 16 hospitals in the UK's National Health Service have been targeted by a large cyber attack.

The New York Times reports that "Attacks were being reported in Britain and 11 other countries, including Turkey, Vietnam, the Philippines, Japan, with the majority of affected computers in Russia."