The National Crime Agency in the UK has issued an alert warning citizens of a “mass spamming event” for a piece of malware called CryptoLocker that encrypts your files and then demands a ransom to restore access.

According to the agency, tens of millions of customers, especially small and medium-sized businesses in the UK, have been targeted by the malicious emails. The attack, which appears to have surfaced in late October, takes over a machine’s files and then starts a countdown requiring victims to pay two Bitcoins to get their files back.

“The NCA are actively pursuing organised crime groups committing this type of crime. We are working in cooperation with industry and international partners to identify and bring to justice those responsible and reduce the risk to the public,” Lee Miles, Deputy Head of the NCA’s National Cyber Crime Unit said in the alert.

Mass ransomware spamming event targeting UK computer users (NCA)

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