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Cybersecurity experts say the unknown hackers who launched the “ ransomware ” attacks used a hole in Microsoft software that was discovered by the National Security Agency and exposed when NSA documents were leaked online .
 ransom: “ ransomware ” attacks
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:
 ransom: “ ransomware ” attacks