1649
“ Cybercriminals are continuing to exploit British businesses by launching ransomware attacks to remove access to mission - critical data or to make significant sums of money by demanding large ransoms for the safe return of such data .
 ( ransom: launching ransomware attacks,  Cybercriminals: attacker, remove access to mission - critical data: 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: launching ransomware attacks,  Cybercriminals: attacker, remove access to mission - critical data: attack pattern) 