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Published signals
currently linked to this company
Company intelligence
Nikkei cybersecurity incidents and threat signals
nikkei.com
This company page brings together public reporting currently associated with Nikkei. It reflects signals published by Shadow Tier and should not be read as a complete incident history.
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Last 28 days
recent published signals
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Last 90 days
recent published signals
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High or critical
confidence classifications
June 25, 2026
Latest report
most recent published signal
Company signals
All published signals involving Nikkei
Nikkei Suffers Data Breach Exposing 17,000 Individuals' Information
Nikkei, the largest business news outlet in the world, disclosed a data breach that exposed personal customer and employee information. The incident was caused by info-stealer malware infecting an employee's personal computer, leading to the theft of Slack credentials and access to company Slack accounts.
FAQ
Questions about Nikkei cybersecurity reporting
What does the Nikkei page include?
It combines a reviewed organization profile with all current published Shadow Tier signals explicitly linked to Nikkei.
Does every mention of Nikkei appear here?
No. A signal must contain a reliable company connection and meet the publication criteria; incidental or ambiguous mentions are excluded.
Why can the incident count change?
The page follows current published reporting. Counts change as new evidence is added, classifications are reviewed, or older signals leave the reporting window.