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On Friday , the unnamed hacker began dumping a sizable database stolen from Freedom Hosting II onto the internet , potentially exposing its users .
 the unnamed hacker: attacker; Freedom Hosting II: victim; exposing its users: purpose; Friday: time
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:
 the unnamed hacker: attacker; Freedom Hosting II: victim; exposing its users: purpose; Friday: time