The Convention on Cybercrime of the Council of Europe (CETS No.185), known as the Budapest Convention, is the only binding international instrument on this issue. It serves as a guideline for any country developing comprehensive national legislation against Cybercrime and as a framework for international cooperation between State Parties to this treaty.

The Budapest Convention is supplemented by a Protocol on Xenophobia and Racism committed through computer systems.

• The Budapest Convention (CETS 185)
• The Protocol on Xenophobia and Racism (ETS 189)
• Guidance Notes

There are currently 66 Parties to the Budapest Convention and a further 12 have signed it or been invited to accede. 

Factsheets: Budapest Convention | First Additional Protocol | Second Additional Protocol (.pdf)

Translation
 

The Convention on Cybercrime of the Council of Europe and the Protocol on Xenophobia and Racism are also available in non-official versions. The official languages of the Council of Europe are English and French (Article 12 of the Statute of the Council of Europe). Only the treaties published by the Secretary General of the Council of Europe, each in a separate booklet of the "European Treaty Series" (ETS) continued since 2004 by the "Council of Europe Treaty Series" (CETS), are deemed authentic. The translations presented here are for information only.

The Convention: Arabic -- Bosnian -- Bulgarian -- Cambodian -- Chinese -- Czech -- Dutch -- Georgian -- German -- Finnish -- Hungarian -- Italian -- Indonesian -- Lao -- Mongolian -- Portuguese -- Romanian -- Russian -- Slovak -- Spanish -- Macedonian -- Turkish -- Vietnamese 

Explanatory Reports: Arabic -- Portuguese -- Spanish

The Protocol: Arabic -- Chinese -- Czech -- German -- Russian

Explanatory Reports: Arabic