A padlock is displayed at the Alert Logic booth during the 2016 Black Hat cyber-security conference in Las Vegas, Nevada, U.S. August 3, 2016.  REUTERS/David Becker

Spain said on Friday a large number of companies, including telecommunications giant Telefonica (TEF.MC), had been infected with malicious software known as “ransomware” which locks up computers and demands ransoms.

http://uk.reuters.com/article/us-spain-cyber-idUKKBN1881TJ