2358
It 's somewhat unusual that attacks have started so quickly after the flaw was announced and it 's not yet clear whether an exploit for the vulnerability already existed in closed circles before Monday .
 discover vulnerability: was announced
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:
 discover vulnerability: was announced