445
" News of the extortion attempt first appeared in The Hollywood Reporter on 15 May when Bob Iger , CEO at Walt Disney , revealed the hackers had demanded that Disney pay a " huge sum " in Bitcoins to prevent them from leaking a then - undisclosed movie online .
 hackers: attacker
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: ransom 
  Option: victim, attacker, payment method, attack pattern, damage amount, tool, time, price, place 
Text: {0} 
Answer:
 hackers: attacker