3539
Researchers said that in many cases , data stored in the MongoDB now is simply being destroyed and when victims pay the ransom they do not receive their data back .
 ( ransom: pay the ransom,  victims: victim, they: victim, being destroyed: attack pattern, the MongoDB: victim) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: phishing, data breach, ransom, discover vulnerability, patch vulnerability, Arguments type: vulnerable system, capabilities, vulnerability, number of victim, issues addressed, compromised data, damage amount, common vulnerabilities and exposures, victim, patch number, number of data, tool, discoverer, time, purpose, place, payment method, releaser, vulnerable system version, attacker, supported platform, patch, price, vulnerable system owner, trusted entity, attack pattern. 
Text: {0} 
Answer:
 ( ransom: pay the ransom,  victims: victim, they: victim, being destroyed: attack pattern, the MongoDB: victim) 