IoT Security: Securing the Internet of Threats
Cybersaviours Team
Cybersecurity Expert
The Internet of Things (IoT) has exploded, bringing connectivity to everything from lightbulbs to MRI machines. However, security is often an afterthought in device design.
The IoT Security Gap
- Weak Defaults: Many devices ship with hardcoded credentials (admin/admin).
- No Patching: Many devices lack a mechanism for over-the-air (OTA) updates.
- Insecure Protocols: Using cleartext protocols like Telnet or HTTP.
Methodology: Securing IoT Deployments
1. Network Segmentation (VLANs)
Isolate IoT devices on their own VLAN. They should not be able to communicate with the corporate LAN or critical servers. Use firewall rules to allow only necessary traffic (e.g., the thermostat talking to the HVAC controller, not the Finance server).
2. Discovery and Profiling
Use NAC (Network Access Control) or specialized IoT security tools to discover every device on the network. Profile them to understand what they are (e.g., "Samsung Smart TV") and what their normal behavior looks like.
3. Password Management
Change default passwords immediately upon deployment. If possible, use unique credentials for each device.
4. Disable Unused Features
If a camera supports UPnP (Universal Plug and Play) or cloud access but you don't use it, turn it off to reduce the attack surface.
Tags
Weekly Intelligence
Get the latest threat alerts and security insights delivered to your inbox.