1522
According to The Guardian , the company became aware of a problem last week but only realized on Friday that data could be accessed externally , and only started contacting affected customers on Saturday .
 ( data breach: could be accessed,  that data: compromised data, Friday: time, last week: time, the company: victim, customers: victim, Saturday: time) 
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:
 ( data breach: could be accessed,  that data: compromised data, Friday: time, last week: time, the company: victim, customers: victim, Saturday: time) 