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The most significant attack , the leaking of thousands of private emails between senior members of the DNC to Wikileaks by Fancy Bears , lead to the resignation of DNC Chair Debbie Wasserman - Schultz .
 data breach: the leaking
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 leaking