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Cyber researchers say that the virus , which was linked to malware called Petrwrap or Petya , used an “ exploit ” developed by the National Security Agency that was later leaked onto the Internet by hackers .
 data breach: leaked
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: leaked