This record tracks a ransomware attack claimed by the
BrainCipher group against
Deloitte UK. It collects the publicly disclosed attack details — sector, location and
timeline — as published on the operator's leak site and indexed by Breach House.
Window Zero
EXPOSURE GAP
Window Zero is the time the breach stayed in the open before
anyone said so — the gap between when the attack was first discovered
on the operator's leak site (t1) and when it was publicly disclosed (t2).
The wider this window, the longer victims, staff and customers were exposed with no warning.
-65days
t1 · Published
t2 · Disclosed
Business Category
Services
Published
December 04, 2024
Disclosed / Notified
Oct 01, 2024
Attack Summary
[AI generated] 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.
Leak Screenshots
SAMPLE
Proof-of-breach screenshots the operator posted from the stolen data. Previews are
redacted and locked — the originals are available on HaveIBeenRansom.
Dark Web Exposure
Findings for deloitte.co.uk
— indexed by HaveIBeenRansom.
498
found in Infostealer logs
2,994+
found in Traditional breaches
6+
found in Ransomware leaks
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••• emails
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Database World ROC · breach
••• emails
@BreachedData1 LinkedIn 2021-23 Cleaned.7z.001
Database World ROC · breach
••• emails
2844Breaches_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
pureincubation-com.7z.001
Database World ROC · breach
••• emails
Collection1_BF.7z.003
formaceft_db · breach
••• emails
AntiPublic_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
+ 10 more leak sources locked
Leak volumes are locked
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Legal Disclaimer:
This ransomware victim record reflects information published on the operator's leak site.
Breach.house does not acquire, download, host, access or redistribute unlawfully obtained data. It indexes only publicly visible information posted by ransomware, breach and infostealer operators and open web sources, without accessing the underlying stolen content. The service supports public awareness, legitimate research and cyber-resilience.