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renesas.com
This company page brings together public reporting currently associated with Renesas. It reflects signals published by Shadow Tier and should not be read as a complete incident history.
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Based on all published signals currently linked to Renesas. Affected countries come from victim data; the company country above remains a separate profile fact. Counts describe this reporting set, not overall incident prevalence.
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Renesas Electronics Suffers Ransomware Attack by CoinbaseCartel
Renesas Electronics, a Japanese semiconductor manufacturer, fell victim to a ransomware attack by the CoinbaseCartel group. The group claimed responsibility on December 6, 2025, threatening to release sensitive data if their demands were not met. The breach was discovered on the same day. Renesas is investigating the extent of data exfiltration, which allegedly includes semiconductor documentation and manufacturing intelligence.
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What does the Renesas page include?
It combines a reviewed organization profile with all current published Shadow Tier signals explicitly linked to Renesas.
Does every mention of Renesas 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.