Lakshmana, R., 2022. U.S., U.K. Agencies Warn of New Russian Botnet Built from Hacked Firewall Devices. [online] The Hacker News. Available at [Accessed 25 February 2022]
Hanna K. et al., 2022. cyberwarfare. [online] Tech Target. Available at [Accessed 25 February 2022]