1906
The scammers abused the handling of pop - ups in Mobile Safari in such a way that a person would be “ locked ” out from using Safari unless they paid a fee — or knew they could simply clear Safari ’s cache ( see next section ) .
 ( ransom: paid a fee,  they: victim, be “ locked ” out from using Safari: attack pattern, a person: victim, The scammers: attacker, abused the handling of pop - ups in Mobile Safari: attack pattern) 
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: paid a fee,  they: victim, be “ locked ” out from using Safari: attack pattern, a person: victim, The scammers: attacker, abused the handling of pop - ups in Mobile Safari: attack pattern) 