Major Cyber Attack: London Councils' Data Breach and the Impact (2026)

London Councils Confirm Major Cyber Attack: Data Access and Copying Incident Under Investigation

The recent cyber attack on London councils has raised concerns, with Hammersmith and Fulham also impacted due to shared systems with local authorities. The National Crime Agency and the National Cyber Security Centre (NCSC) are investigating the incident. A Kensington and Chelsea Council spokesman revealed that evidence of data copying and removal has been found, but the breach only affects historical data. The council is currently assessing the potential exposure of personal and financial details.

Elizabeth Campbell, the leader of Kensington and Chelsea Council, emphasized the importance of transparency and timely communication. She stated, "As soon as I was informed about the potential data breach, I took immediate action to inform the public. While we are still gathering information, it is crucial to keep residents informed and allow them to make informed choices and protect themselves."

The attack is suspected to have originated from Kensington and Chelsea Council, which shares IT systems with neighboring authorities. The council acted swiftly to safeguard its network but experienced a temporary loss of access to critical services, including its call center. London councils have been advised to educate staff on avoiding suspicious emails and unexpected links.

Criminals encrypted approximately 440,000 files belonging to the local authority. The Information Commissioner's Office has been notified, and the authority is being criticized for not implementing adequate security measures. This incident highlights the ongoing challenges in safeguarding sensitive data and the need for proactive cybersecurity strategies.

Major Cyber Attack: London Councils' Data Breach and the Impact (2026)

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