1432
Yet , following a surge in ransomware attacks — in which hackers seize and lock an organization ’s data and networks and only unlock them for a hefty fee — cyber watchers are beginning to fear this plot could become reality .
 ( ransom: ransomware attacks,  hackers seize and lock an organization ’s data and networks: attack pattern) 
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: ransomware attacks,  hackers seize and lock an organization ’s data and networks: attack pattern) 