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In this phishing attack , discovered by Proofpoint researchers in December , attackers place legitimate ads targeting brand managers and influencers with a link to a phishing site purporting to offer account verification .
 attackers: attacker; legitimate ads: trusted entity; December: time; brand managers: victim; influencers: 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: phishing 
  Option: victim, attacker, attack pattern, purpose, damage amount, tool, time, place, trusted entity 
Text: {0} 
Answer:
 attackers: attacker; legitimate ads: trusted entity; December: time; brand managers: victim; influencers: victim