Microsoft warns ransomware cyber-attack is a wake-up call

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A cyber-attack that has hit 150 countries since Friday should be treated by governments around the world as a "wake-up call", Microsoft says.

It blamed governments for storing data on software vulnerabilities which could then be accessed by hackers.

It says the latest virus exploits a flaw in Microsoft Windows identified by, and stolen from, US intelligence.

There are fears of more "ransomware" attacks as people begin work on Monday, although few have been reported so far.

Many firms have had experts working over the weekend to prevent new infections. The virus took control of users' files and demanded $300 (£230) payments to restore access.

The spread of the WannaCry ransomware attack slowed over the weekend but the respite might only be brief, experts have said. More than 200,000 computers have been affected so far.

BBC analysis of three accounts linked to the ransom demands suggests about $38,000 (£29,400) had been paid by Monday morning.

However, the ransomware warning said that the cost would double after three days, so the payments may increase. It threatens to delete files within seven days if no payment is made.

There are fears of more "ransomware" attacks as people begin work on Monday, although few have been reported so far.

Many firms have had experts working over the weekend to prevent new infections. The virus took control of users' files and demanded $300 (£230) payments to restore access.

The effect in Asian nations so far on Monday has been limited. South Korea said just nine cases of ransomware had been found, giving no further details.

Australian officials said so far only three small-to-medium sized businesses had reported being locked out of their systems while New Zealand's ministry of business said a small number of unconfirmed incidents were being investigated.

The spread of the WannaCry ransomware attack slowed over the weekend but the respite might only be brief, experts have said. More than 200,000 computers have been affected so far.

In Japan, both Nissan and Hitachi reported some units had been affected, while in China energy giant PetroChina said that at some petrol stations customers had been unable to use its payment system.

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