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Listed on a ransomware leak site

Deloitte UK

deloitte.co.uk

Deloitte UK was listed on the Brain Cipher leak site on Dec 4, 2024. Information as of Oct 19, 2026.

Updated continuously · figures as of Oct 19, 2026
Claimed by
Brain Cipher
First listed
Dec 4, 2024
Claims recorded
1

Leak-Site Claim.

Brain CipherConfirmed claim
Posted on the leak site
Dec 4, 2024
Collected by Brandefense
Jul 12, 2025
Data claimed
Not stated
Leak-site post text, written by the group
Deloitte UK is a leading professional services firm, part of the global Deloitte network. It offers audit, consulting, financial advisory, risk management, and tax services across various industries. Known for its expertise and innovation, Deloitte UK helps clients solve complex business challenges. It emphasizes diversity, inclusion, and sustainability in its operations and corporate culture.

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Figures as of Oct 19, 2026. Confirmed leak-site claims collected by Brandefense technologies and validated by Brandefense analysts.

Listed on a leak site means a ransomware group has claimed the company; it is not a confirmed breach. To request a correction or removal, contact Brandefense.