Brain Cipher claims ransomware attack on Deloitte UK, steals over 1TB of data

The hacker group Brain Cipher claims to have stolen over 1TB of sensitive data from Deloitte UK, including client information and security protocols. They have reached out to Deloitte for negotiations regarding the breach. Deloitte has not yet made a public statement about the alleged attack. The situation marks a significant security incident for the company, which has not faced such a breach recently. The breach highlights ongoing concerns about cybersecurity in large organizations. Brain Cipher's actions reflect the increasing threat posed by ransomware groups targeting major firms.