[Japanese Crypto Exchange Zaif Suspects Leaking Email Addresses of Approximately 380,000 Customers Due to Third-Party Service Provider Hack] Japanese cryptocurrency exchange Zaif announced that its email service provider, Arara, suffered unauthorized access, resulting in the leakage of approximately 380,000 customer email addresses (after deduplication). Zaif stated that the leaked information is limited to email addresses and does not include names, transaction information, passwords, or other data. No intrusion was detected in its own systems, and accounts cannot be logged into using only the email address. No secondary damage, such as asset loss, has been confirmed. Due to the suspension of Arara's services, Zaif has suspended email delivery and reminded customers to be wary of phishing emails impersonating Zaif or Arara, and not to click on links or enter authentication information. Customers are advised to use a verification application for two-factor authentication instead.