Hardware

How to secure your digital signage network

While digital signage may not seem to pose significant security risks, these endpoints can be highly valuable to cyber attackers as they’re often left unprotected and connected to sensitive business data.

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March 27, 2026 by Nazy Fouladirad — President/ COO, Tevora

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When it comes to cybersecurity, businesses often have a long list of digital assets they want to protect. However, one important area often overlooked in security planning is digital signage.

While digital signage may not seem to pose significant security risks, these endpoints can be highly valuable to cyber attackers because they're often left unprotected and connected to sensitive business data.

Below, we'll cover a range of strategies to help you secure your digital signage network effectively.

Network segmentation and isolation

If you have digital signage boards connected to the same network as other critical assets, such as an HR database or an internal data network, this can create several security risks. If one of your boards is compromised, these units can serve as a bridge for attackers to move laterally across a network and identify other sensitive endpoints to exploit.

To prevent this, connecting your signage boards via a virtual local area network can be highly effective. This keeps all of your critical infrastructure completely separated from the units.

Another element you want to ensure is that you maintain a "zero trust" approach in your business. This helps you apply best practices for securing systems that access your content management systems or databases, ensuring only authorized users can access them.

Hardening physical and port security

The physical accessibility of most digital signage displays in public spaces is what increases their risk profile. Unlike servers or data storage centers that have both physical and digital security controls, public signage in airports, restaurants, malls, and cafes provides anyone with access.

One of the first lines of defense you have is to create tamper-proof enclosures for each of your signs. It's important to ensure all cabling, memory cards, and USB ports are fully blocked and inaccessible. This will help to minimize the risk of in

Beyond physical security, ensure that any software and firmware used to control the device are properly locked down. Secure the BIOS with strong passwords and authentication protocols to minimize risk across the digital attack surface.

Implementing access control and MFA

Relying on a single shared password for your content management system that feeds media files to your digital signage can create a significant security gap. To strengthen security, enable multi-factor authentication for any connected applications or services running on the digital signage board. This adds an additional layer of protection if user credentials are compromised.

Strict governance policies in your business are also critical, especially when adhering to the "principle of least privilege." These ensure that no one has more access to your systems than is required. This helps to eliminate the possibility of content managers accidentally (or purposely) making unsafe configuration changes to digital signage security settings that could create more risk for the business.

Automated patch management and firmware updates

Outdated software is one of the most common causes of security issues in digital signage systems. When operating systems or firmware fail to receive essential security updates, it creates an open door for attackers to exploit them.

To mitigate this, you can automate over-the-air software updates for each of your digital signage applications. This ensures that, as soon as a new update becomes available, the board will download and install it on your behalf.

Protecting data in transit and at rest

Having a proactive approach to network security is essential to protect all your internal and external digital assets. One way to achieve this is to always assume your endpoints are potential targets.

With this in mind, ensure your networks use strong encryption protocols when transmitting data to and from your digital signage boards. This includes using HTTPS with TLS 1.3 to prevent third-party traffic monitoring tools from spying on your connections.

You should also encrypt any locally stored media files on your devices so that, even if one of your signage displays is stolen or compromised, the data on the hard drive remains inaccessible.
Alignment with Compliance Frameworks

Security shouldn't be a guessing game for your business. Aligning your cybersecurity strategies with established compliance frameworks such as SOC 2, ISO 27001, or GDPR will provide your business with a blueprint for managing data security more holistically.

These frameworks will help you to establish the right security maintenance schedules, such as conducting regular vulnerability scans and security audits of all your digital and physical assets. This structured approach moves your security posture from reactive fixes to a proactive, standardized system that is far easier to defend and maintain.

Keep your digital signage technology secure

Securing your digital signage network is an ongoing process that requires regularly monitoring and updating devices to enhance technology resilience.

By isolating your network, physically hardening devices, and enforcing strict access controls, you can better protect "all" of your business infrastructure and limit your risk exposures.

About Nazy Fouladirad

Nazy Fouladirad is President and COO of Tevora, a global leading cybersecurity consultancy. She has dedicated her career to creating a more secure business and online environment for organizations across the country and world. She is passionate about serving her community and acts as a board member for a local nonprofit organization.

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