What Happened
# BT Data Breach Summary Based on the search results provided, in 2025 BT (British Telecom) experienced a significant data breach when the Black Basta ransomware group claimed to have stolen approximately 500 GB of sensitive data from BT’s btci.com and btconferencing.com domains. The breach, which affected the BT Conferencing platform, exposed financial, corporate, and personal information including copies of passports and other identification documents. BT confirmed the incident was restricted to specific elements of the platform, which were rapidly taken offline and isolated, while the company stated that live BT Conferencing services and other BT Group services remained unaffected. The cybercriminals threatened to leak the stolen data unless a ransom was paid, and BT launched an investigation while working with regulatory and law enforcement bodies to respond to the incident.
