He added that the US government does not recommend paying the ransom and warned that making a payment to the hackers doesn't guarantee that access to computer files will be restored.
To recap, on Friday many NHS hospitals across the United Kingdom were forced to shut down IT systems and telephones lines, and in some cases cancel operations and send patients home, after being struck by the ransomware attack, later identified to be a variant of Wanna Decryptor/WannaCry/WCry.
OXFORD hospitals are "remaining vigilant" after the cyber attack hit the NHS and businesses across the world.
More than 200 000 victims in 150 countries and regions were afflicted by the attacks with Russian Federation and the United Kingdom the worst hit.
Overarching security crucial against ransomware attack: Mojo
Theresa May said the attack was not targeted at the NHS, it was part of an global incident. She said it was an worldwide attack with a number of countries and organisations affected.
On Sunday night, Microsoft blamed the U.S. spy agency that had originally developed software that allowed the ransomware attack to infect computers.
More than 200,000 systems in 150 countries have reportedly been affected, including British hospitals and Germany's national railway.
Health Secretary Jeremy Hunt confirmed there had not been a second wave of attacks on NHS trusts and said it was "encouraging" that the level of criminal activity was at "the lower end of the range" anticipated.
It was all hands on deck as cyber security experts in the National Health Service teamed up with the National Cyber Security Centre to patch outdated computer systems last week.
70th Cannes Film Festival Opens Amid Heavy Security
It was Smith who then spoke up in favor of Netflix while citing the viewing habit of his progeny Jaden and Willow Smith. This is also the first festival held since the nearby Nice attack past year that killed 86 people.
"Systems are returning to normal today and I would like to thank NHS staff for their hard work over the weekend. What we don't do in our NHS is micromanage it from the desk", he said. The attack was so overarching that it even affected notably older iterations like Windows XP and Windows Server 2003, forcing the company to release updates to address now-obvious vulnerabilities.
A total 12 out of 14 health boards in Scotland experienced only minor disruptions following Friday's global ransomware attack, with two escaping the attack completely. The cyberattackers demanded payments of $300 or more from users to unlock their devices.
"We should expect similar attacks regularly in the coming days and weeks", Giullaume Poupard, head of French government cyber security agency ANSSI, said.
Chelsea Manning Leaves Prison, Immediately Gets Documentary Movie Deal
Manning was deployed in Iraq as an intelligence analyst when she leaked hundreds of thousands of files to Wikileaks. The military has not agreed to comment on Manning's treatment over the past seven years that she's been imprisoned.
Patch your computers. They should have the latest software update.