# Communications Failure Knocks Out ATMs and Banking at 128 Japanese Credit Unions

**Source:** https://glitchwire.com/news/communications-failure-knocks-out-atms-and-banking-at-128-japanese-credit-unions/  
**Published:** 2026-11-06T17:25:42.849Z  
**Author:** Crypto Desk · Glitchwire  
**Categories:** Finance, Tech

## Summary

A single hardware malfunction in western Japan disabled withdrawals, deposits, and online banking at 3,430 branches on Friday afternoon. No cyberattack was detected.

## Article

At approximately 1:30 p.m. local time on Friday, November 6, communications equipment failed at the West Japan Center operated by Shinkin Kyodo Center. Within minutes, 128 shinkin banks stretching from the Tokai region to Kyushu lost the ability to process customer transactions.

ATMs stopped dispensing cash. Counter services went offline. Internet banking froze. Direct debits and automatic withdrawals were delayed or suspended. According to multiple reports citing statements from Shinkin Central Bank and Shinkin Kyodo Center, roughly 3,430 branches were affected.

## What Went Wrong

The [Shinkin Central Bank](https://en.wikipedia.org/wiki/Shinkin_Central_Bank) and Shinkin Kyodo Center jointly operate a shared infrastructure platform called the Shinkin Joint System. That system serves 236 of Japan's approximately 255 shinkin banks, covering more than 90 percent of the network. The architecture is split between two data centers: one for eastern Japan, one for the west. Friday's failure occurred exclusively at the western facility.

Shinkin Central Bank and Shinkin Kyodo Center issued a joint statement apologizing for the incident. They attributed the outage to an equipment malfunction in communications hardware and said preliminary diagnostics found no evidence of a cyberattack or unauthorized access.

Engineering teams mobilized to isolate the fault and restart affected systems, but the organizations did not initially provide a timeline for full restoration. Later in the day, according to Jiji Press, some services including deposits and withdrawals were brought back online.

## Who Uses Shinkin Banks

Shinkin banks are not commercial banks. They are cooperative financial institutions, founded in 1951, that serve small and medium-sized enterprises and local residents. Membership is restricted to businesses with fewer than 300 employees and capitalization under 900 million yen, along with individuals who live or work in the bank's region. Loans are, in principle, made only to contributing members.

That structure means Friday's outage did not affect Japan's megabanks or their customers. But for sole proprietors, shopkeepers, and local firms in Aichi, Osaka, Hiroshima, and other prefectures covered by the West Japan Center, the timing was poor: Friday afternoon in a country still heavily reliant on cash transactions.

Among the specific institutions posting service suspension notices on their websites were Osaka City Shinkin Bank, Osaka Shinkin Bank, Nara Shinkin Bank, and Hiroshima Shinkin Bank. Customers at Seto Shinkin Bank reported that their cash cards could not be used at partner financial institutions or convenience store ATMs.

## Single Points of Failure

The incident underscores the risks inherent in shared banking infrastructure. Regional cooperative banks pool resources into centralized platforms to reduce costs, but that efficiency creates fragility. A single hardware fault at one facility propagated outward to 128 institutions and over three thousand branches in a matter of minutes.

Eastern Japan's shinkin banks, running on the separate East Japan Center, operated normally throughout the afternoon. The [July outage at Google Cloud's London region](/news/google-clouds-london-outage-takes-down-revolut-across-europe/), which brought down Revolut across Europe, showed a similar pattern: centralized infrastructure failing across political and corporate boundaries simultaneously.

Shinkin Central Bank has not publicly disclosed which vendor supplied the faulty communications equipment or what specifically failed. The investigation remains open.

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