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The upstarts look unstoppable but might an obscure hacker called The Dark Overlord , previously connected to health sector data extortion , have spotted an important flaw in the model ?
 The Dark Overlord: attacker; health sector: 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:
 The Dark Overlord: attacker; health sector: victim