The UK’s National Crime Agency has given out an urgent national alert that a mass spamming event targeting 10 million UK based email users with a piece of malware called Cryptolocker Ransomware that encrypts your files and then demands a ransom money to restore access. The agency has said that the people who are majorly receiving targeted spam emails that appear to be from banks and other financial institutions. The NCCU is trying to trace that who is sending the emails. Anyone whose computer is infected should report it to www.actionfraud.uk.
Source: https://thehackernews.com/2013/11/Cryptolocker-Ransomware-spam-emails-campaign-ten-million-users.html