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The hackers ’ method , in which messages appear to come from a trusted source but are infected with malware , were relatively sophisticated .
 messages: tool; a trusted source: trusted entity; infected with malware: 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: phishing 
  Option: victim, attacker, attack pattern, purpose, damage amount, tool, time, place, trusted entity 
Text: {0} 
Answer:
 messages: tool; a trusted source: trusted entity; infected with malware: attack pattern