Businesses in Asia disrupted by cyber attack, authorities brace for more

China Daily reports 200,000 computers affected in China, with particularly schools and colleges

Asian governments and businesses reported some disruptions from the WannaCry ransomware worm on Monday but cybersecurity experts warned of a wider impact as more employees turned on their computers and checked e-mails.

The ransomware that has locked up more than 200,000 computers in more than 150 countries has been mainly spread by e-mail, hitting factories, hospitals, shops and schools worldwide.

"Most of the attacks are arriving via e-mail, so there are many 'landmines' waiting in people's in-boxes," said Michael Gazeley, managing director of Network Box, a Hong Kong-based cyber security company.

In China, the world's second-largest economy, energy giant PetroChina