3364
" The incident follows a similar attack on the Northern Lincolnshire and Goole Foundation Trust in October , when malware was used to encrypt files on the trust 's system and demand a ransom in order to access them again .
 ransom: a similar 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 similar attack