6
Typical strategy : Install something to watch the video Cybersecurity experts are already familiar with the technique used to trick questioning users into installing the Facebook Message Video virus .
 ( phishing: trick,  users: victim, installing the Facebook Message Video virus: purpose) 
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: trick,  users: victim, installing the Facebook Message Video virus: purpose) 