516
Over the weekend the company took the unusual step of releasing a similar patch for Windows XP , which the company announced in 2014 it would no longer support .
 patch vulnerability: releasing
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: releasing