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The Shadow Brokers first emerged on social media in August by similarly dumping operational code for a cohort of old firewall exploits that targeted vulnerabilities in Cisco , Fortinet and Juniper Networks products .
 ( discover vulnerability: first emerged,  vulnerabilities: vulnerability, The Shadow Brokers: discoverer, Networks products: vulnerable system, a cohort of old firewall exploits: vulnerability, Cisco: vulnerable system owner, Fortinet: vulnerable system owner, Juniper: vulnerable system owner) 
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: first emerged,  vulnerabilities: vulnerability, The Shadow Brokers: discoverer, Networks products: vulnerable system, a cohort of old firewall exploits: vulnerability, Cisco: vulnerable system owner, Fortinet: vulnerable system owner, Juniper: vulnerable system owner) 