SMBC: its maintenance contractor lost two hard disks holding about 70,000 Kasai branch transactions
Hard disks recording a branch's passbook transactions went missing at OKI CrossTech, the contractor that maintains the bank's equipment.
Disclosed
2020-05-01
Organizations involved
2
Leaked or at risk
70K
70,000
Downtime
Unknown
What happened
On the bank said two hard disks with its data could not be found at OKI CrossTech, its maintenance contractor. [1] [2]
Impact
About 70,000 transactions for new or renewed passbooks at the Kasai branch from to , with names or company names, account numbers, amounts, balances and more. Names, amounts and balances were stored converted into letters, digits and symbols by the equipment. The bank found no sign of theft and no reports of misuse. [2]
Timeline
- Disclosed 2020-05-01
- 1 days
Attack or cause
- Method
- [Lost device]
- Impact
- [Data leak]
- Entry point
- Supplier
Data exposed or at risk
Supply chain
- Organizations listed on this site
- 2
Organizations involved
[Through a supplier][Moderate]Tokyo, ChiyodaFinance and insurance70,000 leaked
Sumitomo Mitsui Banking Corporation[Breached][Moderate]Tokyo, ChuoOther services70,000 leaked
OKI CrossTech Co., Ltd.
Sources
- [1][News]三井住友銀行の保守委託企業がハードディスク紛失、葛西支店の顧客情報10年分ScanNetSecurity · 2020-05-07 09:00
- [2][News]委託先で取引情報含むHDD2台が所在不明 - 三井住友銀Security NEXT · 2020-05-01