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Among the recent cyber attacks of this kind , the ` WannaCry ransomware attack ' of May 2017 infected more than 2,30,000 computers across 150 countries .
 May 2017: time; computers: victim
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: ransom 
  Option: victim, attacker, payment method, attack pattern, damage amount, tool, time, price, place 
Text: {0} 
Answer:
 May 2017: time; computers: victim