A security camera stands outside the main Telefonica headquarters in Madrid, Spain, Friday, May 12, 2017.  The Spanish government said several companies including Telefonica had been targeted in ransomware cyberattack that affected the Windows operating system of employees&#39; computers. It said the attacks were carried out with a version of WannaCry ransomware that encrypted files and prompted a demand for money transfers to free up the system. (AP Photo/Paul White)