552
The assault on Hollywood Presbyterian occurred Feb 5 , when hackers using malware infected the institution 's computers , preventing hospital staff from being able to communicate from those devices , said Chief Executive Allen Stefanek .
 ransom: The assault
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: The assault