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In addition to Baratov , the Russian agents allegedly hired a 29 - year - old Latvian named Aleksey Belan , who pulled off the main hack against Yahoo , and stole the database involving 500 million user accounts .
 data breach: the main hack against
Please tell me event type and its trigger word from given type options. Output format is "type: trigger".  Option: phishing, data breach, ransom, discover vulnerability, patch vulnerability 
Text: {0} 
Answer:
 data breach: the main hack against