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Which companies just had a verified incident, who lends to them and who owns them. Every claim carries its evidence level and its source. How we decide what is confirmed

Global Financial Service Disruptions

Docomo SMTB Net Bank (formerly SBI Sumishin Net Bank)

digital bank · JP · East Asia · 株式会社ドコモSMTBネット銀行

Technical failureStatus: resolvedTier 1Severity 2 of 5Evidence confidence: highAnalyst-verified

Docomo SMTB Net Bank suspended its corporate bulk transfer (総合振込) service on 2 Nov 2026 after a system malfunction and cancelled all bulk transfer requests received from 30 Oct 19:00 through 2 Nov, advising customers to use other banks. Service resumed at 10:05 JST on 3 Nov.

Original: 法人のお客さま向けの「総合振込サービス」においてシステム不具合が発生し、サービスを停止しております / 振込が必要な場合は…他行をご利用いただく

First disruption
Nov 2
First public signal
Nov 2 (bank notice first describing a delay in the corporate bulk transfer (総合振込) service, upgraded to a suspension at 16:07 JST)
Acknowledged
Nov 2 07:07 UTC
Restored
Nov 3 01:05 UTC
Duration
18 hours
DFX first recorded
Nov 5 14:58 UTC

What was restricted

transfers outScope: single service

Corporate bulk transfer service suspended; all bulk transfer requests received on 2 Nov and those received from 30 Oct 19:00 through 1 Nov were cancelled, including requests dated 2 Nov and 4 Nov. Customers told to send transfers one by one, use another bank, or resubmit after recovery.

Cause, kept in separate layers

What the institution said
System malfunction (システム不具合); cause under investigation, not further explained
DFX classification
Technical failure (cyber: unconfirmed)
Analytical hypothesis (not established)
Batch processing fault in the corporate bulk transfer engine; the retroactive cancellation of requests received from 30 Oct 19:00 suggests queued weekend batches were corrupted or could not be released. Unverified.
Wording used
システム不具合, 他行をご利用いただく
Conflicting reports
Exact start of the fault is not stated; the cancellation window reaching back to 30 Oct 19:00 suggests requests from then were affected, but the first public signal was on 2 Nov. Original_text is a close paraphrase assembled from quoted fragments, not a single verbatim sentence.

Dependencies

A dependency is a documented relationship. It is not evidence that the provider was compromised.

  • Downstream: Corporate customers' payees (suppliers, possibly payroll): Scheduled bulk payments cancelled and had to be re-sent manually or via other banks (plausible)

Evidence