622
What is clear is that despite the fact that a software patch has been available since March for the SMB flaws , WannaCry is using tens of thousands of organizations that did n't patch .
 ( patch vulnerability: has been available,  since March: time, the SMB flaws: vulnerability, a software patch: patch, WannaCry is using: issues addressed) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: phishing, data breach, ransom, discover vulnerability, patch vulnerability, Arguments type: vulnerable system, capabilities, vulnerability, number of victim, issues addressed, compromised data, damage amount, common vulnerabilities and exposures, victim, patch number, number of data, tool, discoverer, time, purpose, place, payment method, releaser, vulnerable system version, attacker, supported platform, patch, price, vulnerable system owner, trusted entity, attack pattern. 
Text: {0} 
Answer:
 ( patch vulnerability: has been available,  since March: time, the SMB flaws: vulnerability, a software patch: patch, WannaCry is using: issues addressed) 