United States says North Korea directly responsible for huge WannaCry cyberattack

Washington: The United States officially accused North Korea late on Monday of carrying out the massive WannaCry attack that infected some 300,000 computers in 150 countries earlier this year.

North Korea was widely suspected of being behind the computer virus and ransomware, which demanded payment to restore access. It has been denounced as such by Britain, but the United States had yet to follow suit.

Representational image. Reuters

Representational image. Reuters

Homeland Security Advisor Tom Bossert made the announcement in a Wall Street Journal op-ed and was expected to provide more details in a briefing with reporters early on Tuesday.

"The attack was widespread and cost billions, and North Korea is directly responsible," he wrote. "We do not make this allegation lightly. It is based on evidence."

Among the infected computers were those at Britain's National Health Service (NHS), Spanish telecoms company Telefonica and US logistics company FedEx.

"These disruptions put lives at risk," Bossert wrote. "North Korea has acted especially badly, largely unchecked, for more than a decade, and its malicious behaviour is growing more egregious. WannaCry was indiscriminately reckless."

He said Washington must lead efforts to cooperate with other governments and businesses to "mitigate cyber risk and increase the cost to hackers," and thus improve internet security and resilience.

"When we must, the US will act alone to impose costs and consequences for cyber malfeasance," Bossert added.

President Donald Trump "has already pulled many levers of pressure to address North Korea's unacceptable nuclear and missile developments, and we will continue to use our maximum pressure strategy to curb Pyongyang's ability to mount attacks, cyber or otherwise."

The WannaCry attack spread rapidly around the globe using a security flaw in Microsoft's Windows XP operating system, an older version that is no longer given mainstream tech support by the US giant.

Ransomware, which can be used on PCs as well as tablets and smartphones, is malicious software which locks computer files and forces users to pay the attackers a designated sum in the virtual Bitcoin currency to regain access to the files.

The Washington Post cited a US official as saying that Trump's administration would be urging allies to counter North Korea's cyberattack capabilities and implement all "relevant" UN Security Council sanctions.

It said the CIA had already laid blame on North Korea for the attack in November, though the assessment was classified and had not yet been previously reported.

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Updated Date: Dec 19, 2017 11:04:23 IST

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