1
Published signals
currently linked to this company
Company intelligence
Talktalk cybersecurity incidents and threat signals
talktalk.co.uk
This company page brings together public reporting currently associated with Talktalk. It reflects signals published by Shadow Tier and should not be read as a complete incident history.
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Last 90 days
recent published signals
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confidence classifications
July 1, 2026
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Based on all published signals currently linked to Talktalk. Affected countries come from victim data; the company country above remains a separate profile fact. Counts describe this reporting set, not overall incident prevalence.
Confirmed impacts
Company signals
All published signals involving Talktalk
TalkTalk Confirms Data Breach Involving Third-Party Supplier
UK telecommunications firm TalkTalk confirmed on January 27, 2025, that it was investigating a data breach. A hacker, known as 'b0nd,' claimed to have stolen personal data from approximately 18.8 million current and former customers from a third-party supplier's system. TalkTalk, however, disputed the scale of the breach, stating the number was 'wholly inaccurate and very significantly overstated.'
FAQ
Questions about Talktalk cybersecurity reporting
What does the Talktalk page include?
It combines a reviewed organization profile with all current published Shadow Tier signals explicitly linked to Talktalk.
Does every mention of Talktalk 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.