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currently linked to this company
Company intelligence
Dinum cybersecurity incidents and threat signals
dinum.fr
This company page brings together public reporting currently associated with Dinum. 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
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June 29, 2026
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Based on all published signals currently linked to Dinum. Affected countries come from victim data; the company country above remains a separate profile fact. Counts describe this reporting set, not overall incident prevalence.
Attack patterns
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French government messaging platform Tchap breached via compromised user account
DINUM, the French government's digital affairs directorate, warned that hackers breached Tchap, France's encrypted messaging platform for public sector workers, using a compromised user account. The incident was detected by ANSSI, after which the affected account was blocked and an investigation launched into what conversations and data may have been accessed. DINUM has notified France's data protection authority, CNIL, due to the potential exposure of personal data. A threat actor claimed responsibility, alleging they used social engineering to access an education-related account and scrape messages, account information, and files, including 13.5GB of data from the French tax authority and other civil servants.
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Questions about Dinum cybersecurity reporting
What does the Dinum page include?
It combines a reviewed organization profile with all current published Shadow Tier signals explicitly linked to Dinum.
Does every mention of Dinum 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.