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“ While ransomware attacks require technical infrastructure to launch campaigns at scale , BEC attacks are socially engineered and highly targeted in nature , conducted by a single actor rather than teams , and generally launched from shared email platforms , ” he explained .
 single actor: attacker; teams: attacker
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:
 single actor: attacker; teams: attacker