538
Cyber security researchers on Monday pointed to code in a " ransomware " attack that could indicate a link to North Korea .
 ransom: a " ransomware " attack
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: a " ransomware " attack