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While combing through WikiLeaks ’ Vault 7 data dump , Cisco has unearthed a critical vulnerability affecting 300 + of its switches and one gateway that could be exploited to take over the devices .
 discover vulnerability: has 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: has unearthed