MI5 director general Ken McCallum says Iranian and Russian hybrid activity is increasing, placing critical infrastructure, political institutions and counterterrorism capabilities under renewed scrutiny.

A broader security warning

In his annual assessment, McCallum warned of activity attributed to Iranian and Russian networks targeting British interests. The British security service describes a mix of covert threats rather than a conventional military campaign. Allegations about particular plots remain subject to investigation and, where applicable, judicial process.

Critical infrastructure exposure

Military facilities and infrastructure can attract hostile surveillance, cyber intrusions or attempted sabotage. Defensive planning must account for different techniques without assuming every suspicious incident is state-directed. Coordination between intelligence agencies, police and private operators is essential.

AI changes the operational environment

McCallum also warned that artificial intelligence may help extremist actors with reconnaissance and potentially dangerous research. The risk is not that AI independently creates an attack, but that it can lower barriers to some tasks when combined with access, intent and other resources.

Accountability and resilience

The political response must protect national security while retaining oversight and evidence standards. Clear attribution, proportionate countermeasures and investment in protective security are more useful than indiscriminate suspicion.

The wider implications

The development carries consequences beyond the immediate event. Public institutions and affected organisations need to distinguish confirmed facts from assessments and forecasts, especially where security, markets or public trust are involved. The available reporting does not establish every operational detail.

What to watch next

Further official statements, independently corroborated evidence and measurable changes on the ground will determine how the story develops. Claims about responsibility, economic effects or future decisions should remain provisional until supported by reliable information.

Reporting reference: Reuters. Analysis and context by The Tower Post.