2723
The Internet Systems Consortium patched the BIND domain name system this week , addressing what it calls a critical error condition in the software .
 ( patch vulnerability: patched,  the BIND domain name system: vulnerable system, this week: time, The Internet Systems Consortium: releaser) 
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: patched,  the BIND domain name system: vulnerable system, this week: time, The Internet Systems Consortium: releaser) 