After this lesson, you will be able to: Understand IoT vulnerabilities and how network segmentation protects them.
IoT devices, printers, cameras, smart TVs, thermostats, typically ship with default passwords, never get patched, and run on the same flat network as your laptops. Segment or perish.
Default credentials (admin/admin, no password). Embedded Linux that's never patched (manufacturer abandons it). No EDR/AV possible (constrained device). Often listening on the network for management.
1. Network segmentation. IoT VLAN, can't reach corporate.
2. Change default credentials.
3. Disable unnecessary services (UPnP, telnet).
4. Update firmware when possible.
5. Monitor egress traffic (compromised IoT phones home).
6. Plan device EOL, replace abandoned hardware.
Industrial control systems (factories, utilities) are like IoT but worse, multi-decade-old protocols (Modbus, DNP3) with no auth. Stuxnet showed the impact. ICS security is its own subspecialty.
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