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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 .
 ( phishing: phishing attack,  attackers: attacker, legitimate ads: trusted entity, December: time, brand managers: victim, influencers: victim) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: phishing, data breach, ransom, discover vulnerability, patch vulnerability, Arguments type: vulnerable system, capabilities, vulnerability, number of victim, issues addressed, compromised data, damage amount, common vulnerabilities and exposures, victim, patch number, number of data, tool, discoverer, time, purpose, place, payment method, releaser, vulnerable system version, attacker, supported platform, patch, price, vulnerable system owner, trusted entity, attack pattern. 
Text: {0} 
Answer:
 ( phishing: phishing attack,  attackers: attacker, legitimate ads: trusted entity, December: time, brand managers: victim, influencers: victim) 