2087
A group of hackers are allegedly threatening to remotely wipe millions of iPhones and iCloud accounts , unless Apple agrees to pay a ransom by April 7th .
 ( ransom: pay a ransom,  April 7th: time, Apple: victim, threatening to remotely wipe millions of iPhones and iCloud accounts: attack pattern, A group of hackers: attacker) 
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:
 ( ransom: pay a ransom,  April 7th: time, Apple: victim, threatening to remotely wipe millions of iPhones and iCloud accounts: attack pattern, A group of hackers: attacker) 