
How AI Could Change the Security Threats Facing the UK
MI5 says it has encountered terrorists seeking to combine AI and drones, and warns that violent groups could use AI to help develop bioweapons.
The short version
- MI5 chief Sir Ken McCallum said the service had caught terrorists seeking to exploit AI, including by integrating it with drones; he also warned violent groups could use AI in developing bioweapons. 2
- The sources do not describe a specific AI-enabled attack on the UK public; the warning concerns capabilities and risks, not a claim that such an attack has occurred. 12
- McCallum said hostile activity could disrupt essential services: examples he gave included hacks affecting banking, drones disrupting flights and cyber-attacks on hospitals. 1
- MI5 says it is confronting serious threats from foreign states as well as terrorism, but the reports do not provide technical details about the AI systems or plans involved. 12
What did MI5 say AI could help terrorists do?
In his annual address, MI5 chief Sir Ken McCallum said the agency had caught terrorists seeking to exploit artificial intelligence, or AI. The BBC report says this included integrating AI with drones. The reports do not explain what those individuals intended to do, how advanced their efforts were, or whether the technology was used in an attack. 2
McCallum also warned that violent groups might use AI in efforts to develop new bioweapons. A bioweapon is a biological agent used to harm people. This was presented as a risk MI5 wants to stay ahead of, not as a report that such a weapon has been created or deployed. 12
Does this mean an AI attack has happened in the UK?
The reports provided do not say that an AI-enabled terrorist attack has taken place in the UK. They describe MI5 detecting people seeking to exploit AI and warn about possible future uses. That distinction matters: a warning about capability is not evidence that a particular attack is imminent. 2
The coverage also refers to a suspected attack against RAF Fairford, but the supplied excerpts do not establish that it involved AI. It should not be treated as evidence of an AI-related incident. 1
How could these threats affect ordinary people?
The immediate public concern described by McCallum is wider disruption to services people rely on. He said hostile activity could affect banking, flights and healthcare. His examples included hacks that disable banking services, drones that disrupt flights and cyber-attacks on hospitals that affect treatment. 1
These are examples of possible disruption, not predictions that each service will be attacked. The reports do not say that AI was behind those particular scenarios. They place the AI warning alongside broader concerns about terrorism, foreign states and threats to essential infrastructure. 12
What other security threats did MI5 highlight?
McCallum described a heightened foreign-state threat and named Russia and Iran among the concerns. The BBC reported his view that Russia was the leading aggressor and said he described Russian activity as hybrid warfare: pressure and hostile actions that avoid open conventional conflict with Nato. 12
The BBC also reported warnings about extreme right-wing terrorism. McCallum said MI5's operational missions addressing terrorism and state threats were now of roughly equal scale, in a period when he said threats from foreign adversaries had quadrupled. The sources do not give a timeframe or method for that comparison in the supplied excerpts. 2
What should the public take from the warning?
The message is that AI may add to existing security challenges, including terrorist use of technology and the possibility of developing dangerous biological capabilities. The reports do not establish that AI alone creates these risks or that it has already changed the level of danger to any individual reader. 12
McCallum called for a broad effort to protect national infrastructure. For the public, the practical point in his speech was that disruptions to services can affect everyday life, while the reports offer no specific public instructions or advice. 1
The coverage gives only a high-level account of MI5's warning. It does not describe the systems involved, the cases MI5 detected, how likely the warned-about uses are, or what safeguards are in place.
What we don't know yet
- What AI tools or drone capabilities were involved in the cases MI5 detected.
- Whether any of the efforts MI5 described progressed beyond attempts to exploit AI.
- How likely or soon the warned-about uses of AI to develop bioweapons might be.
- What safeguards or specific public steps MI5 recommends; the supplied reports do not detail these.
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Questions people ask
What is MI5 warning about AI?
MI5 chief Sir Ken McCallum said the service had caught terrorists seeking to exploit AI, including by integrating it with drones. He also warned that violent groups could use AI in developing bioweapons. 2
Have terrorists used AI to attack the UK?
The reports provided do not say that an AI-enabled terrorist attack has occurred in the UK. They say MI5 caught terrorists seeking to exploit AI, but do not give details about their plans or how far those efforts went. 2
Could AI disrupt UK flights or hospitals?
McCallum warned that drones could disrupt flights and that cyber-attacks on hospitals could affect treatment. The report does not say that AI was involved in those examples. 1
What does MI5 say about AI and bioweapons?
Sources
- UK in ‘new era of security’ with most foreign threats since Cold War, MI5 chief warns — The Independent, 2026-10-13
- MI5 tackling more state threats than during Cold War, warns intelligence chief — BBC News
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