MI5 issues advisory on foreign interference targeting MPs and staff

Britain's domestic security service issued a public advisory on Monday urging members of Parliament and their staff to be vigilant after detecting sustained efforts by foreign state actors to gather intelligence and influence UK political life. MI5 said agents and intermediaries from China, Russia and Iran have used methods including phishing, blackmail, longterm relationship building and targeted approaches online to collect sensitive information and attempt to sway decision making.

The guidance, produced by MI5’s National Protective Security Authority, warns that hostile actors can conceal malicious intent behind seemingly ordinary interactions such as casual introductions, networking events or flattering messages. Officials advised politicians to monitor “odd social interactions,” be cautious about frequent private meeting requests, be wary of offers that pressure a quick response or appear too good to be true, and report suspicious approaches to their security teams. The document also recommends following established protective guidance from national security bodies and applying simple countermeasures summed up in the BEST principles: be alert, enhance security overseas,...