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WannaCry targeted a Server Message Block ( SMB ) critical vulnerability that Microsoft patched with MS17 - 010 on March 14 , 2017 .
 patch vulnerability: patched
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: patched