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Social media phishing attacks jumped by a massive 500 % in Q4 , driven by a huge increase in fraudulent accounts including many posing as customer support for big name brands , according to Proofpoint .
 big name brands: trusted entity; customer support: 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:
 big name brands: trusted entity; customer support: attacker