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That ’s just what happened to guests at a luxury hotel in Austria when they were left stranded outside of their rooms after a ransomware attack that overrode electronic key systems .
 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