Get the Whitepaper called Digital Signage Systems – The Modern Hacker’s Outreach. It discusses everything from public incidents to common attack vectors leveraged to manipulate content.
You can download it from the following link: https://packetstormsecurity.com/files/download/160339/ThePresentation2020-DigitalSignage-GjokoKrstic.pdf
Source: https://packetstormsecurity.com/files/160339/Digital-Signage-Systems-The-Modern-Hackers-Outreach.html