3321
Mejri said he contacted Apple ’s Product Security Team about the issues on Dec. 15 and acknowledged that the vulnerability should be able to be resolved on the server - side without performing any required end - user interaction or updates .
 ( discover vulnerability: said,  Mejri: discoverer) 
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:
 ( discover vulnerability: said,  Mejri: discoverer) 