MI6 is launching its own dedicated portal on the dark web in the hope of attracting new spies online, notably from Russia.
Secure messaging platform Silent Courier aims to strengthen national security by making it easier for the intelligence agency to recruit, the Foreign Office said.
Potential agents in Russia and around the world will be targeted by the UK, it adds.
Outgoing MI6 Chief Sir Richard Moore on Friday appealed to potential spies globally to anonymously access the dark web by following instructions on MI6's own YouTube video.
In his final public speech as MI6 Chief, Sir Richard launched the worldwide recruiting drive targeting potential spies in Russia, China, Iran, North Korea and elsewhere.
He expressed scathing criticism of President Putin, stating there is no evidence that the Russian president has any interest in a negotiated peace. He added that Putin cannot succeed in Ukraine and that Russia's economy and demography are in long-term decline.
Likewise, he accused China of supporting Russia's war effort through various means.
Foreign Secretary Yvette Cooper emphasized the importance of national security and the agency's efforts to stay ahead of potential threats.
As of now, anyone wanting to securely convey sensitive information can access the portal. Usage instructions will be provided on MI6's YouTube channel, advising users to employ trustworthy VPNs for anonymity.