The Internet of Things (IoT) refers to physical devices, vehicles, appliances, and other objects embedded with sensors, software, and internet connectivity, enabling them to collect and exchange data through the web. IoT encompasses everything from consumer devices like smart home appliances to Industrial IoT (IIoT) devices that are part of manufacturing processes.
IoT Security Challenges
Securing IoT devices is essential for safety, especially with medical IoT and IIoT, but can be difficult to manage given that IoT devices are separate from traditional network monitoring, can come in large numbers from different manufacturers, and may generate large volumes of data.
Many IoT devices are introduced outside of traditional IT procurement processes. They are often deployed quickly to meet operational needs, with limited consideration for long-term security management. As a result, security teams may not know which devices are connected, what data they transmit, or how they communicate with other systems.
Attackers use internet-connected smart devices like printers and vending machines to gain access to corporate networks for cyberattacks. Weak passwords, insecure network protocols, and unpatched vulnerabilities are common for these systems, creating risks to data security and an entry point for attackers into an organization's network.
Common IoT Security Threats
IoT security threats include default credential exploitation, firmware vulnerabilities, man-in-the-middle attacks on unencrypted communications, botnet recruitment (such as Mirai botnet attacks), physical tampering, and supply chain compromises. The convergence of IT and OT (operational technology) networks in industrial environments creates additional risk.
Security Best Practices
Organizations can improve IoT security through network segmentation isolating IoT devices from critical systems, changing default credentials, keeping firmware updated, implementing device authentication, monitoring IoT traffic for anomalies, and maintaining a complete inventory of connected devices.
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