NEW YORK (AP) — Dozens of countries were hit with a huge cyberextortion attack Friday that locked up computers and held users’ files for ransom at a multitude of hospitals, companies and government agencies.
It was believed to the biggest attack of its kind ever recorded.
The malicious software behind the onslaught appeared to exploit a vulnerability in Microsoft Windows that was supposedly identified by the National Security Agency for its own intelligence-gathering purposes and was later leaked to the internet.
Britain’s national health service fell victim, its hospitals forced to close wards and emergency rooms and turn away patients. Russia appeared to be the hardest hit, according to security experts, with the country’s Interior Ministry confirming it was struck.
All told, several cybersecurity firms said they had identified the malicious software, which so far has been responsible for tens of thousands of attacks, in more than 60 countries. That includes the United States, although its effects there didn’t appear to be widespread, at least initially.
The attack infected computers with what is known as “ransomware” — software that locks up the user’s data and flashes a message demanding payment to release it. In the U.S., FedEx reported that its Windows computers were “experiencing interference” from malware, but wouldn’t say if it had been hit by ransomware.
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