2001
Security researchers from computer and network security outfit Cybellum have revealed a new zero - day code injection and persistence technique that can be used by attackers to take over applications and entire Windows machines .
 ( discover vulnerability: have revealed,  Security researchers: discoverer, a new zero - day code injection: vulnerability, persistence technique: vulnerability, be used by attackers to take over applications and entire Windows machines: 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: have revealed,  Security researchers: discoverer, a new zero - day code injection: vulnerability, persistence technique: vulnerability, be used by attackers to take over applications and entire Windows machines: capabilities) 