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Colt cybersecurity incidents and threat signals
colt.net
This company page brings together public reporting currently associated with Colt. 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 Colt. 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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Colt Technology Services Hit by WarLock Ransomware, Data Offered for Sale
UK-based telecommunications provider Colt Technology Services experienced a cyberattack starting around August 12, 2025, which disrupted support and online platforms. The WarLock ransomware group claimed responsibility, asserting they are selling one million documents containing sensitive financial, employee, and customer information for $200,000. The attack likely exploited a critical Microsoft SharePoint vulnerability (CVE-2025-53770). Stolen data reportedly includes employee salary data, customer contracts, and network architecture designs.
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What does the Colt page include?
It combines a reviewed organization profile with all current published Shadow Tier signals explicitly linked to Colt.
Does every mention of Colt 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.