Digital Signage Connectivity
Connectivity that keeps your screens online and your network secure
Growing scale, growing attack surface
Digital signage networks are growing in scale and strategic importance. As cloud-managed displays become more common, they also become more vulnerable. Real-world incidents show what happens when connectivity and security are not treated as infrastructure priorities.
- Gatwick Airport (2018), a fibre cut took 1,200 screens dark for 7 hours. The displays needed just 3 Mbps each, but had no cellular failover.
- Bristol Airport (2018), ransomware spread laterally across the network because there was no segmentation between signage and other systems.
- Samsung MagicINFO (2025), an unauthenticated remote code execution vulnerability was exploited for crypto mining, with a 700 MB patch required across affected estates.
- German pharmacy chain (2016), TeamViewer credentials were visible on screen, giving anyone in the building remote access to the signage network.
Resilient, isolated connectivity for signage estates
SIMSY addresses the connectivity and security gaps that have caused real-world signage failures, with no additional hardware or software at each screen.
- Multi-network failover prevents the Gatwick scenario, cellular backhaul keeps screens online when fixed lines fail
- CPL isolation prevents lateral movement, each screen or group is segmented at the network level, blocking the Bristol ransomware pattern
- No remote access tools needed, CPL removes the need for TeamViewer or similar tools that create credential exposure
- Remote fleet management for firmware updates across the entire estate without site visits
- LAN device discovery to identify and monitor every device on the signage network
- Continuous monitoring with anomaly detection and real-time alerting
What the platform delivers
Multi-Network Failover
Automatic failover across multiple carriers ensures screens stay online even when fixed-line connectivity fails. The Gatwick scenario, 1,200 screens dark for 7 hours, is preventable with cellular backhaul.
CPL Isolation
Each screen or group operates on an isolated Cellular Private LAN. Lateral movement between signage and other systems is blocked at the network level, preventing the ransomware pattern seen at Bristol Airport.
No TeamViewer Needed
CPL provides secure remote access to every screen without third-party remote access tools. No credentials visible on screen, no additional software to patch, no attack surface from tools like TeamViewer.
Remote Fleet Management
Push firmware updates, restart displays, and troubleshoot issues across your entire signage estate remotely. No engineer dispatch required for software-related faults.
LAN Device Discovery
Automatically discover and monitor every device on your signage network. Know exactly what is connected, where it is, and whether it is behaving normally.
Continuous Monitoring
Real-time monitoring with anomaly detection across your entire signage estate. Know the moment a screen goes offline, a device behaves unexpectedly, or a security event occurs.
Ready to talk?
We are the founders. Drop us a direct email and we will arrange a call. No booking forms, no automated sequences. A straight conversation about your signage estate and how SIMSY can help.