1. Cisco annual internet report, 2018–2023;Arbor Networks,2022
2. The (in) security of smart cities: Vulnerabilities, risks, mitigation, and prevention;Kitchin;J. Urban Technol.,2019
3. A. Ioanid, C. Scarlat, G. Militaru, The effect of cybercrime on Romanian SMEs in the context of wannacry ransomware attacks, in: European Conference on Innovation and Entrepreneurship, 2017, pp. 307–313.
4. Railway cyber-security in the era of interconnected systems: A survey;Soderi;IEEE Trans. Intell. Transp. Syst.,2023