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When two ransomware attacks hit the city of Riverside in April and May , it was n’t the first time the city ’s public safety servers lost data because of a malicious virus , this newspaper found in a review of city records .
 ransom: two ransomware attacks hit
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: two ransomware attacks hit