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“ The vulnerability occurs because of improper sanitization of the iWatch firmware update filename , ” the group wrote in a technical description of the vulnerability that also included a proof - of - concept exploit and instructions on how to patch the flaw .
 discover vulnerability: occurs
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: occurs