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11th December was Microsoft ’s December 2018 Patch Tuesday , which means users had to update their computers to be protected from the latest threats to Windows and Microsoft products .
 patch vulnerability: update
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: update