500
In - display fingerprint reader technology is widely considered an up - and - coming feature to be used in a number of flagship model phones introduced in 2019 by top OEM phone makers , according to Tencent ’s Xuanwu Lab which is credited for first identifying the flaw earlier this year .
 discover vulnerability: first identifying
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: first identifying