685
Of significance is that this is the second time in about a year that D - Link has failed to address security vulnerabilities affecting its products after being notified by researchers .
 patch vulnerability: has failed to address
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:
 patch vulnerability: has failed to address