3680
The expert added further info on the attack , while experts at the FBI were working to fix the issue , he noticed that the Plone 0day exploit was still working against the CMS backend . )
 ( discover vulnerability: noticed,  the Plone 0day exploit: vulnerability, he: discoverer, working against the CMS backend: capabilities) 
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:
 ( discover vulnerability: noticed,  the Plone 0day exploit: vulnerability, he: discoverer, working against the CMS backend: capabilities) 