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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
Please tell me event type and its trigger word from given type options. Output format is "type: trigger".  Option: phishing, data breach, ransom, discover vulnerability, patch vulnerability 
Text: {0} 
Answer:
 patch vulnerability: was fixed