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Apple is reassuring customers that its systems have not been breached while a hacker , or hackers , threaten to remotely wipe hundreds of millions iPhones of all their data , including photos , videos , and messages .
 ( data breach: have not been breached,  threaten to remotely wipe hundreds of millions iPhones of all their data: attack pattern, Apple: victim, customers: victim, its systems: victim, a hacker: attacker, 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:
 ( data breach: have not been breached,  threaten to remotely wipe hundreds of millions iPhones of all their data: attack pattern, Apple: victim, customers: victim, its systems: victim, a hacker: attacker, hackers: attacker) 