1605
A broad array of Android phones are vulnerable to attacks that use booby - trapped Wi - Fi signals to achieve full device takeover , a researcher has demonstrated .
 discover vulnerability: has demonstrated
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 demonstrated