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Kubernetes has12 become the most popular cloud container orchestration system by far , so it was only a matter of time until its first major security hole was discovered .
 discover vulnerability: was discovered
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 discovered