A constantly changing international environment and a fast-paced advancement of information and communications technologies (ICTs) essentially modify the traditional ways of diplomacy. In the digital age, the use of e-tools has become a daily routine for diplomats, and the developments in the cyber realm define the global political agenda, transforming the mechanisms of multilateral cooperation. Meanwhile, the digitalisation of diplomatic interactions is intrinsically tied with cyber risks. The lack of a solid legal framework for regulation of the virtual space inevitably leads to conflicts. This article highlights new features that cyber diplomacy brings into international relations, raising the issue of online security, appropriate response to cyberattacks, and a right for self-defence. (Olga Rusova).