Deloitte Denies Breach, Claims Only Single System Affected
ID: 4141dac5-023b-50d2-851b-223ab15599c7
STIX ID: report--4141dac5-023b-50d2-851b-223ab15599c7
Feed Name: GBHackers
Threat Score
Ransomware group Brain Cipher claimed on 4 December to have exfiltrated ~1TB of data from Deloitte UK and gave the firm 10 days to respond; Deloitte refutes a breach of its systems, saying the allegations relate to a single client system outside Deloitte's network. The report notes Brain Cipher operates a TOR-based leak site, leverages LockBit 3.0–style payloads, and has a history of extortion activity, but provides no independently verified evidence that Deloitte's infrastructure was compromised.
Your team is not currently subscribed to this feed. You must subscribe to it in order to see this post.