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All it takes is for one black hat to find a new zero - day networking software flaw and wide - spread ransomworm becomes a real possibility .
 ( discover vulnerability: find,  a new zero - day networking software flaw: vulnerability, wide - spread ransomworm: capabilities, one black hat: discoverer) 
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: find,  a new zero - day networking software flaw: vulnerability, wide - spread ransomworm: capabilities, one black hat: discoverer) 