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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 .
 phishing: posing as
Please tell me event type and its trigger word from given type options. Output format is "type: trigger".  Option: phishing, data breach, ransom, discover vulnerability, patch vulnerability 
Text: {0} 
Answer:
 phishing: posing as