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A security researcher that goes by the Twitter handle SandboxEscaper , however , decided it would be a good idea to expose a 0 - day threat to the world on Twitter , without forewarning Microsoft , and even linked to proof on concept code on GitHub that has since been verified as functional .
 discover vulnerability: expose
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: expose