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Following the discovery , UpGuard contacted Verizon on June 13 to inform the telecom giant of the data leakage and then on June 22 the exposure was sealed up , according to UpGuard 's report .
 ( data breach: the data leakage,  the telecom giant: victim, Verizon: victim, June 13: 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: the data leakage,  the telecom giant: victim, Verizon: victim, June 13: time) 