The US Treasury on Friday placed sanctions on three North Korea government-sponsored hacking operations which it said were behind the theft of possibly hundreds of millions of dollars and destructive cyber-attacks on infrastructure.

US puts sanctions on North Korea hacking groups behind major thefts

DHS Computer Emergency Response Team said some networks could be infected with the Volgmer "backdoor Trojan" which gives hackers complete control of a computer system.

North Korean malware still lurks in computers worldwide: US

Security Minister Ben Wallace said Britain believed quite strongly?that the ransomware attack came from a foreign state.

Britain believes North Korea was behind ransomware 'WannaCry' NHS cyber attack

More than half of the affected machines were in Russia, followed by Ukraine, Bulgaria, Turkey and Japan, according to ESET.

Ransomware 'Bad Rabbit' hits computers in Europe

Computers whose software is not kept up to date can hurt not only the computers? owners, but ultimately all internet users

'Petya' ransomware attack shows corporate social responsibility should include cybersecurity

The rapidly spreading cyber extortion campaign underscores growing concerns that businesses have failed to secure their networks

New cyber attack, similar to 'WannaCry', sweeps globe - once again

The central bank had previously said Russian banks were targeted in the global cyber extortion campaign late last week

WannaCry cyber attack compromised some banks: Russian central bank

The warning comes on the heels of the 'WannaCry' cyberattack, which has hit hundreds of thousands of computers worldwide

China warns Windows users of fresh ransomware virus attack

Researchers are struggling to try to find early traces of WannaCry, which remains an active threat in hardest-hit China and Russia

Security experts find clues to ransomware worm's lingering risks

The fast-spreading cyber extortion campaign has infected more than 300,000 computers worldwide

WannaCry: Cyber attack eases, but hacking group threatens to sell code

Britain's National Cyber Security Centre (NCSC) published his discovery, but also noted he was not an employee

The anonymous whiz kid who foiled the global cyberattack

Most ATMs are running fine, but some which may not have the updated Microsoft's Windows operating system, could be prone to attack

WannaCry: Some banks shut ATMs, government says no major impact of ransomware attack in India

Researchers supported Symantec and Kaspersky Lab's findings of a similarity in WannaCry software code used earlier with one used in a North Korea-run hacking operation

Researchers see possible North Korea link to global cyber attack

China: Cyber attack hits government, schools, but spread slows

The ransomware threat has been growing over the years, as these charts show.

Infographic: How big a problem is ransomware?

The recent WannaCry ransomware attack has raised questions about how it works and how to guard against it

WannaCry: What is ransomware and how to protect yourself from it

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