On October 29th the Labour party was informed by a ‘third party’ that “a significant quantity” of Party data had been rendered inaccessible.
The Labour Party took immediate action and reported to relevant parties, including the NCA (National Crime Agency) and NCSC (National Cyber Security Centre). Under UK Data protection laws the Information Commissioners Office (ICO) was also notified of the breach.
In a statement on the Labour party website the information affected included information about Party members, affiliated supporters and other individuals who provided their information about the party.
For data to become inaccessible suggests more than a IT System hack, and without more detail would suggest that the organisaiton has been hit by ransomware although this has not been made clear by the Party.