Uzbekistan was among fifty-one states, including all EU members, to have pledged their support for a new international agreement to set standards on cyber-weapons and the use of the internet on Monday.
The states have signed up to a so-called "Paris Call for Trust and Security in Cyberspace", an attempt to kickstart stalled global negotiations.
China, Russia and the United States did not sign the pledge, reflecting their resistance to setting standards for cyber-weapons which are at the cutting edge of modern warfare.
Campaigners have called for a "Digital Geneva Convention", a reference to the Geneva conventions that set standards for the conduct of wars.
They want states to commit to not attacking infrastructure which is depended upon by civilians during wartime, for example.
A new international norm would also help define a state-backed cyber-attack and when a state could be justified in retaliating.
Dozens of countries are thought to have developed offensive cyber-weapons.
The text of the Paris call was presented by French President Emmanuel Macron when he opened UNESCO's Internet Governance Forum in Paris Monday.
It has also been signed by 93 civil society groups and 218 companies.
"To respect people's rights and protect them online as they do in the physical world, states must work together, but also collaborate with private-sector partners, the world of research and civil society," according to the text.
