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currently linked to this company
Company intelligence
Knownsec cybersecurity incidents and threat signals
knownsec.com
This company page brings together public reporting currently associated with Knownsec. It reflects signals published by Shadow Tier and should not be read as a complete incident history.
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recent published signals
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Last 90 days
recent published signals
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confidence classifications
June 25, 2026
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Based on all published signals currently linked to Knownsec. 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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Knownsec Data Breach: A Trove of Espionage Tradecraft with an Insider Narrative
Stolen data from Chinese cybersecurity firm Knownsec was reportedly sold on the Dark Web around November 7, 2025. The leak exposed internal documents, offensive cyber tools, and evidence of global targeting, prompting concerns about Chinese cyber operations. Insider activity is suspected as the root cause.
FAQ
Questions about Knownsec cybersecurity reporting
What does the Knownsec page include?
It combines a reviewed organization profile with all current published Shadow Tier signals explicitly linked to Knownsec.
Does every mention of Knownsec 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.