Thanks to its regulatory powers, robust digital economy, and active foreign and security policy, the European Union is one of the key players in cyberspace. The EU strongly promotes the position that international law, and in particular the United Nations (UN) Charter, applies in cyberspace. As a complement to binding international law, the EU endorses the voluntary non-binding norms, rules and principles of responsible State behaviour that have been articulated by the UN Group of Governmental Experts. It also encourages the development and implementation of regional confidence building measures, both in the Organisation for Security and Co-operation in Europe and other regions. On a bilateral level, the EU has established cyber dialogues with strategic partners to reinforce the exchange of good practices, lessons learnt and further the idea of responsible state behaviour in cyberspace.

Internet penetration in Montenegro stands at 83%, while analysis indicates that internet usage increased by 10,000 users (+2%) from 2021 to 2022. [x] As an EU candidate country, Montenegro has strived to align itself with the EU’s cyber priorities and recent strategic documents like the 2018-2021 Cybersecurity Strategy and its 2013-2017 predecessor represent a firm indication of this ambition. In the past five years, however, the Montenegrin government and media outlets have increasingly seen themselves sitting at the bullseye of numerous malicious cyberattacks, suggesting “synchronised action” on the part of several state and non-state actors. [x] A 2022 digital maturity assessment commissioned by the European Bank for Reconstruction and Development and conducted by e-Governance Academy found Montenegro to have only a “basic” level of digital maturity in seven dimensions, including “financing digitalisation, level of digital skill, and access to services”. The same assessment found that the “right conditions” had been generated for the purposes of digitalisation, but implementation fell short. These conditions included “political will and support, the legal framework, digital infrastructure and interoperability, digital identity/signature and security”. Montenegrin policymakers now perceive an increased need to transform their stated strategic goals into concrete action.

An EU candidate country since 2012, Serbia is an important partner in the Western Balkans. The 2020 iteration of the Digital Evolution Scorecard characterised Serbia as a ‘break out’ economy, meaning that despite a relative lack of digital infrastructure the country is rapidly digitalising; internet penetration is one of the highest across the region, standing at 79%. Over the past decade, Serbia’s digital policy has been focused on attracting foreign investment, deepening the digital transformation across the public and private sectors, and promoting economic growth in line with EU targets. These objectives have been operationalised through a series of strategies, notably the Strategy for the Development of Information Security for the period 2017-2020 and the Strategy for combat against cyber crime 2019-2023. The ITU notes, however, that “while innovative, internet-based e-commerce is expected to bring significant growth and development, obsolete legislation and a lack of harmonisation with EU standards and best practice persist, hampering progress”. As the country becomes increasingly more digitalised, the challenge for Serbian cyber diplomacy will be to develop and enhance avenues of European, regional, and international cooperation.

Under the auspices of the UN, the EU and its Member States have consistently reaffirmed that a universal cyber security framework can only be grounded in existing international law, including the Charter of the United Nations in its entirety, international humanitarian law, and international human rights law. 
Addressing issues as to how existing international law and international humanitarian law, including the principles of humanity, necessity, proportionality and distinction, apply to the use ICTs by States is necessary to increase accountability and transparency. International humanitarian law is fully applicable in cyberspace and this should not be misunderstood as legitimising the use of force between states in the cyber domain. The EU has typically opposed calls for the need to adapt existing international law as a means to develop a new legal instrument for cyber issues.

Recalling its EU candidate status, the first substantive session of the 2021-2025 UN Group of Governmental exports (UNGGE) saw Montenegro aligning itself with the EU’s statement that the existing corpus of international law, notably the UN Charter, international humanitarian law, and international human rights law, apply in cyberspace in its entirety. In particular, this includes the principle of state sovereignty, sovereign equality, the settlement of disputes by peaceful means, the provision of the use of force non-intervention in the internal affairs of other states, and the respect for human rights and fundamental freedoms as principles of international law that are applicable to states use of ICTs in cyberspace. [x] Montenegro has also consistently aligned itself with the EU position in a number of key resolutions at the United Nations, including resolutions A/73/27 and A/74/29.

The country has not assumed a firm stance on the application of international law in cyberspace. Serbia’s position paper concerning the Open-Ended Working Group (OEWG) highlighted that multilateral dialogue on “information security” must occur “with strict respect for the Charter of the United Nations”. Echoing the stance of states such as China, Russia, and Cuba, Serbia also raised the alarm about the “danger of developing offensive ICT and militarising the digital space”.

Since 2014, the EU’s ambition has been to act as an ‘honest broker’ on multilateral discussions surrounding issues of cyber governance and norms of responsible state behaviour, aiming to ensure the support and partnership of proactive players in the context of the global debate. The EU has long promoted the need for voluntary, non-binding norms. It believes that norms crystallised under the UN GGE process should generally not be revisited and that progress should be made on matters relating to their implementation. 
Within the OEWG, the EU advanced a suggestion to develop a global repository of existing practice within the United Nations, which would enable UN member states to showcase how they are implementing the voluntary norms of responsible state behaviour, confidence building and other measures.

At the first substantive session of the 2021-2025 UNGGE, Montenegro aligned itself with the EU’s position that the “previous UNGGE and OEWG reports, including corresponding UNGA resolutions adopted by consensus” form the unequivocal basis for “any further discussions on the position, role, and implementation of the voluntary non-binding norms, rules and principles of state behaviour in cyberspace (norms)” [x].

Serbia was represented in the 2016-2017 UN Group of Governmental Experts (UNGGE). Despite its EU candidate status, Serbia does not typically vote in alignment with the EU on key cybersecurity resolutions presented before the UN First Committee. Notable examples include UNGA resolution 73/27, which first established the Open-Ended Working Group (OEWG), as well as later resolutions 74/29 and 75/240.

The EU places great importance on cyber resilience and capacity building. Internally, the Union has built a robust legal acquis in relation to the resilience of critical infrastructures, the cornerstone of which rests upon the 2016 Network and Information Security (NIS) Directive and the 2013 and 2019 Cybersecurity Acts. This legal meshwork seeks to integrate cybersecurity into all elements of the supply chain and introduce soft law mechanisms like the EU cybersecurity certification scheme. In doing so, it harmonises national cybersecurity capabilities, cross-border collaboration and the supervision of critical sectors across the EU. 
In the coming months, the Commission intends to add upon the existing cyber-acquis by introducing an array of new initiatives, such as the updated NIS Directive (the so-called NIS2), a proposal on a Critical Entities Resilience (CER) Directive, and a plan to launch a network of Security Operations Centres across the Union. The aim is to create a Union-wide ‘cybersecurity shield’ that will facilitate the detection of cyberattacks and provide an impetus for proactive action. 
This internal buildup of capabilities is supplemented by the development of a specialised ‘cyber diplomacy toolbox’ that allows the Union and its Member States to address cyber incidents through various joint policies, from cooperation and stabilisation measures to restrictive measures and attribution.

The new Cybersecurity Strategy 2022-2026 aims to improve effective mechanism for responding to cyber incidents and response to cybercrime. The new strategy recognises the establishment of a new body Cyber Security Agency which will be umbrella institution when it comes to cyber security. The CIRT team will be transferred to the new Agency. The 2018-2021 Cybersecurity Strategy explicitly establishes a “reliance” on European and Euro-Atlantic conceptualisations of cybersecurity and resilience. The Strategy points to the EU’s 2016 NIS Directive as the primary source of inspiration, notably in its requirements for the adoption of a national cybersecurity strategy, the definition of relevant authorities, and the creation of a Computer Incident Response Team (CIRT). Indeed, since 2012, the Montenegrin CIRT represents “a central point for coordinating prevention and protection against computer security incidents on the Internet and other IT security risk for the area of Montenegro”. The Strategy also features a dedicated section on cyber defence, highlighting the country’s alignment with NATO targets (E 6202 N). In expanding cyber defence capabilities, the document notes that “special attention will be paid to harmonisation with regard to the standardisation of concepts, methods, policies, and procedures in line with the accepted European and international standards”. It also pledges the country to a set of goals: (1) definition and protection of critical information infrastructure; (2) strengthening the resilience of information systems to incidents; and (3) performing analysis of threats to IT infrastructure. Montenegro completed a bilateral ICT cooperation agreement with Thailand in 2013, while it is also a member of the CAMP initiative, the platform where members “prepare themselves with collective actions to keep cyberspace safe” through training, joint exercises, and dialogues.

Serbia’s legislative framework on cybersecurity is structured upon the 2016 Law on Information Security and its bylaws. The Law ushered in several institutional developments, including the creation of a national CERT in the regulatory agency for electronic communications and postal services (RATEL). The national CERT “monitors the status of incidents on national level, provides early warnings, alerts and announcements, and reacts on incidents by providing the information on affected entities and persons”. [x] It also holds seminars and technical trainings for operators of special importance (critical infrastructure) [x]. 
Meanwhile, the 2021 Cyber Tesla drill (organised in collaboration with the US state of Ohio) constitutes only one example of Serbia’s increased emphasis on critical infrastructure through the prism of cyber defence; the stated objectives included the “construction of military defence system capacities and the National CERT’s capacities for the protection from high-tech attacks, as well as an enhanced cooperation with relevant government and private sector organisations and academic institutions for the purpose of protection of the IT systems”. 
In its UNGGE position paper in 2016, Serbia emphasised the importance of interstate cooperation in “maintaining effective and responsive mechanisms for information exchange, alerts and announcements on cybersecurity incidents”. The paper goes on to posit that “the special focus should be on the protection of critical infrastructure”, especially in the case of transnational attacks. In 2021, Norway donated a platform worth €1.2 million which will “[serve] to hold cyber exercises at the national level enables the real situation of different attack scenarios, and will contribute to capacity building and training of officials in various state institutions”, according to State Secretary of the Ministry of Trade, Tourism and Telecommunications Milos Cvetanovic [x].

The EU has been an early champion of the Budapest Convention signed under the auspices of the Council of Europe, given the overlapping membership of the two organisations. Much of the EU’s cyber diplomatic efforts have focused on promoting the Convention as the main instrument of choice for fighting cybercrime on a global level. EU member states have consistently opposed Russian bids for replacing this regime with another legal framework. 
The Union is represented in the recently constituted Ad Hoc Committee established by UNGA resolution 74/247 by its Member States and is currently focused on ensuring that the process is inclusive, transparent, consistent with the progress of the UNGGE and OEWG processes, and committed to legal consistency.

Montenegro is a party to the Council of Europe-sponsored Budapest Convention, ratifying it in 2010. In February 2013, Montenegro signed the regional Declaration on Strategic Priorities against Cybercrime, which “identified strategic priorities” that largely reflect the spirit and content of the Budapest provisions. [x] The 2018-2021 Strategy lists several developments that have contributed towards strengthening the capabilities of law enforcement authorities in dealing with cybercrime: these include the establishment of a dedicated High-Tech Crime Group within the Ministry of Interior, while the National Security Agency is making “significant efforts aimed at creating normative and operational mechanisms for fighting against cybercrime and espionage”. [x]

Many thanks to Ms Ana Minevski for her valuable comments.

The Information Society and Information Security Development Strategy for the period 2021-2026 provides a comprehensive approach to the field of information security, which includes both (a) information security of ICT systems of special importance and security of the Republic of Serbia, and (b) security of citizens and businesses, which is particularly reflected through the fight against cybercrime. Its predecessor, the 2017 Strategy for the Development of Information Security, in turn, indicates the fight against cybercrime as one of the government’s five key priorities. 
In light of EU accession negotiations, Serbia has signed and ratified the Council of Europe Convention on Cybercrime (Budapest Convention), including its Additional Protocol on Xenophobia and Racism Committed Through Computer Systems. Nevertheless, the country also voted in favour of UNGA resolution 74/247 calling for an international legal instrument to govern this domain. Domestically, the national legislative framework has been developed in accordance with the Budapest Convention and EU legislation. A High-Tech Crime Unit has recently been established within the special prosecutor’s office, along with three specialised units: crime analysis; terrorism and extremism; and drug prevention, addiction and repression. 
Serbia is a member of Interpol, with which the country has discussed ways to enhance cooperation with regard to combatting cybercrime. Serbia is also gradually developing its own bilateral cooperation network, signing a Cooperation Memoranda with India in 2016 [x] and Romania in 2017 [x] as well as receiving assistance from Russian experts [x].

Special thanks to Ms Maja Lakusic for her valuable comments.