729
Researchers from Positive Technologies have unearthed a critical vulnerability ( CVE -2017-6968 ) in Checker ATM Security by Spanish corporate group GMV Innovating Solutions .
 discover vulnerability: unearthed
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: unearthed