2809
A Valve spokesperson said the bug was fixed on Tuesday at noon , but there 's no telling how long the door was open for hackers to exploit it .
 ( patch vulnerability: was fixed,  the bug: vulnerability, Tuesday at noon: time) 
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,  the bug: vulnerability, Tuesday at noon: time) 