In a letter published on Saturday by the NCSC, King Charles III commended the government agency for its work over the past decade, including defending the country against cyber attacks, safeguarding democratic institutions, and protecting critical infrastructure upon which daily life depends.
"From threats to our international order, to the need to balance the risks and opportunities of powerful new technologies, strong cyber security is fundamental to making the online environment safer and more resilient," the King wrote.
The monarch said he was "acutely aware" that much of the NCSC's work could not be praised publicly and expressed "profound gratitude" to staff.
The King's comments specifically noted that "malicious actors" continue to "evolve their tactics by using automated technologies." The warning comes after he cautioned AI executives last month about the "existential dangers" posed by artificial intelligence falling into the wrong hands.
The NCSC, established in 2016 as part of the Government Communications Headquarters (GCHQ), offers guidance and support to organisations facing cyber threats. Earlier this week, the agency offered assistance to online shopping store Asos after customers received a notification from its app sent by hackers, the BBC understands.
The King said the NCSC had "built resilience across our public services, businesses and communities, equipping us all to prosper in our ever-evolving digital world."