A ransomware attack appears to be spreading around the world, leveraging a hacking tool that may have come from the U.S. National Security Agency.
The ransomware, called Wanna Decryptor, struck hospitals at the U.K.’s National Health Service on Friday, taking down some of their network.
Spain’s computer response team CCN-CERT has also warned of a "massive attack" from the ransomware strain, amid reports that local telecommunications firm Telefonica was hit.
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