2505
Hunt and Gevers said there were actually more than 800,000 registered users exposed in the breach .
 registered users: victim; 800,000: number of victim
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: data breach 
  Option: victim, attacker, attack pattern, purpose, damage amount, tool, time, place, number of victim, compromised data, number of data 
Text: {0} 
Answer:
 registered users: victim; 800,000: number of victim