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The ransomware presents its victim with a decryption code , which they can enter in a Dark Web portal to pay the ransom and unlock their files .
 ( ransom: pay the ransom,  a Dark Web portal: payment method, they: victim, The ransomware: tool, its victim: 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,  a Dark Web portal: payment method, they: victim, The ransomware: tool, its victim: victim) 