2951
Simon McVittie , a programmer at Collabora , confirmed the findings of researcher Kirill Tkhai , who disclosed the bug Jan. 26 .
 ( discover vulnerability: confirmed the findings,  Simon McVittie: discoverer, Collabora: discoverer, a programmer: 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: confirmed the findings,  Simon McVittie: discoverer, Collabora: discoverer, a programmer: discoverer) 