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The hacking group has supposedly found vulnerabilities in Snapchat ’s systems and managed to steal 1.7 million user data and leaked them on the dark web .
 ( data breach: steal,  1.7 million: number of data, user data: compromised data) 
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:
 ( data breach: steal,  1.7 million: number of data, user data: compromised data) 