3270
Well , perhaps … Controversial Google security researcher Tavis Ormandy ’s interest was piqued by all of the attention being given to the extension , so he made his own examination of its code and found that it was vulnerable to cross-site scripting ( XSS ) attacks .
 ( discover vulnerability: found,  he: discoverer, its code: vulnerability, the extension: vulnerable system) 
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: found,  he: discoverer, its code: vulnerability, the extension: vulnerable system) 