520
On Sunday , Brad Smith , Microsoft ’s president and chief legal officer , wrote a blog post describing the company ’s efforts to stop the ransomware ’s spread , including an unusual step it took to release a security update for versions of Windows that Microsoft no longer supports .
 patch vulnerability: release
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: release