1752
The attachment purports to be a flight confirmation or receipt but , of course , it 's neither of these things .
 ( phishing: purports to be,  a flight confirmation: trusted entity, receipt: trusted entity, The attachment: tool) 
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: purports to be,  a flight confirmation: trusted entity, receipt: trusted entity, The attachment: tool) 