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DocuSign , a major provider of electronic signature technology , acknowledged today that a series of recent malware phishing attacks targeting its customers and users was the result of a data breach at one of its computer systems .
 computer systems: 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:
 computer systems: victim