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Users are then informed that they must pay a certain amount in order to regain access to their files , with the threat of permanently losing all of their data if they choose not to pay .
 Users: 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:
 Users: victim