Like those of many large organisations, MoD systems are targeted by malicious actors. That threat is only growing and is one that we are very alive to. The MoD monitors the latest information with regard to vulnerabilities and issues advice, guidance and direction. The MoD and suppliers organise patches to address any relevant vulnerabilities. We do not stop there: if we judge that there is a threat to the security and independence of the UK’s critical national infra- structure, we will act accordingly.