Patch old PCs now: New WannaCry ransomware variants found

WannaCry: Everything you need to know about the global ransomware attack

WannaCry: Everything you need to know about the global ransomware attack

Government agencies said they were unaffected. Most operating systems have a setting to download and install security updates automatically.

On affected computers, the WannaCry software encrypts files and displays a ransom message demanding $300 in bitcoin. Speaking on the BBC's Andrew Marr Show, Fallon said the Vanguard submarines that carry the deterrent "operate in isolation" when on patrol, implying that they can't be hacked remotely. It is believed that 200,000 organizations have been affected in 150 countries, including Russia, Spain, and the United States.

"You can point a lot of fingers, but I think given that this was not a zero-day vulnerability (for which no patch is available), the people hacked are to blame", said Robert Cattanach, a partner at the worldwide law firm Dorsey & Whitney and an expert on cybersecurity and data breaches.

"The operating systems on our computers and software downloads are managed centrally so that regular users can not download executable files from the internet without administrative rights", he said in an email.

Companies and governments spent the weekend upgrading software to limit the spread of the virus. Asia reported thousands of new cases but no large-scale breakdowns as workers started the week by booting up their computers.

New variants of the rapidly replicating worm were discovered Sunday and one did not include the so-called kill switch that allowed researchers to interrupt its spread Friday by diverting it to a dead end on the internet.

Russian President Vladimir Putin described the threat as serious, but said Monday that it had caused "no significant damage" to the country's institutions. Universities and other schools were among the hardest hit. "Previous concerns of a wide-scale infection of domestic institutions did not eventuate".

"If people have already taken action and applied the software patch (issued by Microsoft), they need not worry".

Yang Lin, a journalism student at China's Zhejiang University of Media and Communications, told Reuters she had lost her work from four years of study. "Which we will", she said.

Company executives who took the stage used iPhones for most demos, and this happened for a good reason: all the new Windows 10 features that will be part of the Fall Creators Update will work on Apple's device as well.

Experts were urging organizations and companies to immediately update older Microsoft operating systems, such as Windows XP, with a patch released by Microsoft Corp.to limit vulnerability to a more powerful version of the malware — or to future versions that can't be stopped. "But there's clearly some culpability on the part of the US intelligence services".

The news is also likely to embolden cyber extortionists when selecting targets, Chris Camacho, chief strategy officer with cyber intelligence firm Flashpoint, said. The interior ministry said on its website that around 1,000 computers had been infected but it had localized the virus.

NHS Digital, which oversees United Kingdom hospital cybersecurity, said it sent alerts about the problem - and a patch to fix it - to health service staff and IT professionals last month. "They've complacently dismissed warnings which experts, we now understand, have made in recent weeks".

In Britain, the National Cyber Security Centre says it is "working round the clock" with experts to restore vital health services.

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