Nihon University: phishing of faculty/staff mailboxes may have exposed stored personal data

Possible data leak: Six faculty/staff accounts (5 in the Sep 14 report, +1 staff in the Oct 27 update) were phished and used to send 3,977 spam messages. No large exfiltration found, but some mailbox data access cannot be ruled out. University-level notice first dated Sep 14, 2026 (page fetched as Oct 27 update). Separate from faculty-specific notices.