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A group of financially motivated hackers is targeting networks and systems of North American companies , threatening to leak the stolen information and cripple the company by disrupting their networks if they do n’t pay a hefty ransom .
 hackers: attacker; networks: victim; systems: victim; North American companies: victim; threatening to leak the stolen information: attack pattern; company: victim; disrupting their networks: 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:
 hackers: attacker; networks: victim; systems: victim; North American companies: victim; threatening to leak the stolen information: attack pattern; company: victim; disrupting their networks: attack pattern