1901
A flaw in the mobile Safari browser has been exploited by cybercriminals and used to extort money from individuals who have previously used their mobile device to view pornography or other illegal content .
 ( ransom: extort money,  individuals: victim, their mobile device: victim, cybercriminals: attacker, the mobile Safari browser: victim) 
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: extort money,  individuals: victim, their mobile device: victim, cybercriminals: attacker, the mobile Safari browser: victim) 