The United States, Canada, Japan, Australia and New Zealand have all officially accused North Korea this week of being behind the WannaCry campaign. They join the United Kingdom, which blamed Pyongyang for the attack back in October.

While some security firms pointed the finger at North Korea shortly after the attack, Japan and the Five Eyes countries claim their intelligence agencies reached the same conclusion after conducting their own investigations and sharing data with each other.

North Korea has once again denied the accusations, claiming that Washington was demonising it.

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