UK Government security incident history
Hacking, data breaches and other security incidents involving UK Government, with related coverage.
Security flaws expose information on UK government websites
Security flaws exposed information on several UK government websites. The specific types of information exposed, the scale of the impact, and the response measures have not been confirmed.
Read on WIRED ↗FortiBleed Exploitation Leaks UK Government Login Credentials
Impact: UK government login credentials
Russian hackers exposed UK government login credentials in the course of a credential leak exploiting FortiBleed. The specific affected agencies, the scale of the leak, the date and the response have not been confirmed.
Read on Insurance Business ↗UK government confirms it was hacked in October
The UK government was hacked in October 2025. A government minister confirmed the breach, and as of December 19 an investigation was underway.
Related reports: 2 · last report →UK data leak on Afghan allies leads to secret relocation of thousands
100Impact: Leak of information on Afghan allies and more than 100 British nationals; thousands of Afghans relocated
Information on Afghans who worked with British forces was leaked, leading to thousands being secretly relocated to the UK. The leaked data also included more than 100 British nationals, including intelligence officers and special forces members. The UK government continued legal efforts to prevent the incident from being made public, and issues followed over compensation for some victims and the exclusion of others from compensation.
Related reports: 27 · last report →Russian spies hack UK government systems and steal data
Impact: Data and emails stolen
Russian spies hacked UK government systems during 2024. They stole data and emails; the specific agencies affected and the volume stolen have not been confirmed.
Read on The Record from Recorded Future News ↗