3687
Cyberzeist claims to have conducted the hack last month and has posted to Twitter what they claim are screen captures showing the FBI patching against the vulnerability , which appeared to permit public access .
 ( patch vulnerability: patching,  the vulnerability: vulnerability, FBI: releaser, permit public access: 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: patching,  the vulnerability: vulnerability, FBI: releaser, permit public access: issues addressed) 