In the race to modernize workspaces, many decision-makers investing in a commercial AV installation overlook one critical reality: AV systems are now full-fledged network assets — and they come with serious cybersecurity risks.
If you’re responsible for IT, security, or facilities, and you’re rolling out AV-over-IP solutions like video walls, conferencing gear, or digital signage, your AV gear isn’t just broadcasting media — it’s offering potential attackers a backdoor into your network.
This article breaks down the real risks in modern AV deployments and gives you a roadmap to secure them — fast.
Why AV Is Now an IT Asset
Ten years ago, AV systems lived on their own islands. HDMI cables and IR remotes dominated. But today’s commercial AV installation projects involve IP-connected switches, touch panels, cloud dashboards, and control systems integrated with your broader IT environment.
That shift means AV devices are now endpoints — and often, some of your weakest.
A Quick Scenario: From Signage to SOC Alert
Consider this: a digital signage player in your lobby runs an outdated Android OS. It’s connected via Ethernet to your corporate LAN. A default admin credential lets an attacker pivot from that box to scan your internal network, exfiltrate data, or move laterally to critical systems.
It sounds theoretical, but it’s not. This attack vector has played out in healthcare, hospitality, and finance — industries where AV devices are installed, forgotten, and unmanaged.
Where AV Over IP Goes Wrong
Modern AV systems introduce unique risk factors that are often missed by IT and infosec teams.
Top AV Threat Vectors:
- Default credentials – Many AV devices ship with hardcoded logins. Most never get changed.
- Flat networks – AV gear often shares the same VLAN as office workstations or even domain controllers.
- Multicast abuse – AV-over-IP systems use multicast (e.g., via IGMP). Improper controls can flood networks or be used for data exfiltration.
- Unmanaged firmware – AV gear often runs on old Linux or Android kernels. Updates are rare or manual.
- Exposed control interfaces – Web UIs or Telnet ports left open to internal or even public networks.
- Rogue HDMI/USB extenders – Some models auto-bridge USB input to network, creating invisible input vectors.
- Insecure cloud integrations – Remote AV system control tools that lack MFA or use basic auth over HTTP.
If these risks aren’t addressed at install time, AV becomes an attacker’s soft spot — especially in multi-site or unmanaged environments.
Quick Wins: Minimum Viable Hardening
You don’t need to rebuild your AV stack overnight. Start with these minimum viable controls — prioritized for speed and impact.
Top 6 Quick Wins for AV Security:
- Change all default credentials (or better, disable local logins where possible)
- Segment AV gear into dedicated VLANs — never let signage, control systems, or encoders ride on your main network
- Enable IGMP snooping on AV VLANs to control multicast traffic flow
- Disable unused services (e.g., Telnet, HTTP, UPnP)
- Create an asset inventory of all AV endpoints with MAC addresses, IPs, firmware versions
- Update to latest firmware — verify patches from vendors (especially for CVEs tied to Linux kernels or web services)
These are achievable in under 30 days with coordination between IT and AV support teams.
Network Architecture That Works
AV doesn’t need to be a blind spot. You can bake in security by design — with manageable architectures.
AV-Friendly and Secure Network Practices:
- VLAN segmentation for AV-over-IP: Keep AV in its own broadcast domain
- Multicast controls: Use IGMP snooping + queriers to tame multicast
- 802.1X network access control (NAC): Require authentication before AV devices connect
- Syslog integration: Route AV logs (where possible) to your SIEM or SOC platform
- Isolation of cloud-control paths: Ensure AV devices using cloud management APIs use separate outbound-only rules, and enforce DNS filtering
These configurations cost nothing but time — and prevent a breach from spreading from your AV stack to your crown jewels.
Vendor Vetting During Commercial AV Installation
When you’re bringing in a commercial AV installation partner, their security posture becomes part of yours. Most integrators still think like installers, not security professionals. That has to change.
Key Questions to Ask Your AV Integrator:
- Do you change all default credentials during deployment?
- What’s your process for firmware verification and updates?
- Will AV devices be segmented on their own VLANs?
- Can your devices support 802.1X or NAC integration?
- How are multicast and broadcast domains handled?
- Do your cloud tools support MFA, SSO, or audit logging?
- Can logs from AV systems be forwarded to a SOC/SIEM?
If they don’t have good answers, find a partner who does. Commercial AV installation isn’t just about HDMI quality — it’s a cybersecurity concern.
The 30/60/90-Day AV Security Roadmap
Get control of your AV footprint with a phased, collaborative approach across IT and AV stakeholders.
First 30 Days
- Inventory all AV gear
- Identify devices with default creds
- Build an AV VLAN and start segmenting new installs
- Assign AV cybersecurity lead (AV + IT liaison)
Next 60 Days
- Patch high-risk firmware
- Document multicast traffic flows
- Enable IGMP snooping and isolate broadcast storms
- Review cloud integrations and apply MFA
By 90 Days
- Integrate AV logs into SIEM
- Implement NAC for critical AV segments
- Run internal risk audit on AV systems
- Align vendor contracts with security expectations
Final Checklist: Secure AV Deployment
- Before you sign off on any commercial AV installation, run through this security checklist:
- AV endpoints are on segmented VLANs
- Default passwords changed or disabled
- Firmware is current and managed
- Multicast traffic is scoped and controlled
- No exposed web interfaces without auth
- Cloud integrations require MFA
- Logs sent to SOC/SIEM
- Vendor passed security due-diligence
AV is IT now — and it’s time to treat it that way.
If you’re planning a commercial AV installation or auditing an existing one, make cybersecurity a core part of the conversation from day one. Choose partners who understand the intersection of signal flow and network security — and build AV systems that don’t just impress, but protect.
