1065
The bug was unusually dangerous but of a common genre : it was in Microsoft software , could allow a hacker to seize control of a personal computer with little trace , and was fixed April 11 in Microsoft ’s regular monthly security update .
 ( patch vulnerability: was fixed,  security update: patch, April 11: time, allow a hacker to seize control of a personal computer: issues addressed, Microsoft software: vulnerable system, The bug: vulnerability, Microsoft: releaser) 
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:
 ( patch vulnerability: was fixed,  security update: patch, April 11: time, allow a hacker to seize control of a personal computer: issues addressed, Microsoft software: vulnerable system, The bug: vulnerability, Microsoft: releaser) 