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In March , the city of Atlanta was attacked by SamSam ransomware that crippled its court system , prevented water bill payments and forced city employees to file paper reports .
 ransom: was attacked
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: was attacked