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For instance , we have discussed before how an individual hacker or hacking group known as The Dark Overlord has targeted investment banks – stealing internal documents and bringing them to the public ’s attention in an attempt to extort more money .
 The Dark Overlord: attacker; investment banks: victim; bringing them to the public ’s attention: attack pattern; stealing internal documents: attack pattern
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:
 The Dark Overlord: attacker; investment banks: victim; bringing them to the public ’s attention: attack pattern; stealing internal documents: attack pattern