Security Challenges Represented by the IoT

The Future of IoT with PKI & End-Point Device Management

Thanks to the Internet of Things (IoT) people and places and devices are now more connected than ever before. People can communicate with one another from anywhere in the world; they can control their homes and property with their smart phones no matter where they are at present. These devices can be used in residential and commercial and industrial settings, and from homes to supply chain management they are finding utility. However, as these tools become more popular, security issues also arise. Public Key Infrastructure (PKI) and end-point device management have become important tools for addressing the security concerns that accompany IoT.

PKI in IoT

PKI is not a new concept, but its application in the IoT is revolutionary (Pieroni et al., 2020). PKI operates on asymmetric cryptography, where two keys, one public and the other private, are used for permissions. The public key is available to everyone, while the private key remains confidential to the device or user.

In the context of IoT, one can easily see how this is applicable in terms of providing security. For example, one may have something as simple as a smart thermostat or a connected car that one can only reach remotely. These devices need to communicate with other devices or central servers securely in order to function, however. The traditional username-password model is vulnerable because of end-user carelessness (the end-user could give away the password). Or attackers can easily exploit weak passwords. Moreover, managing passwords for billions of devices is impractical. Thus, PKI provides a solution. When an IoT device is manufactured, a digital certificate is embedded within. It acts like a digital passport. This certificate is signed by a trusted Certificate Authority (CA), and it functions by establishing the device's authenticity. In order for the device to communicate with the network, it first has to present this certificate. The network then must recognize the certificate's legitimacy and give permission to the device to connect. This process prevents rogue or counterfeit devices from accessing the networking, and it thus reduces the impersonation attacks and other kinds of security breaches (Omolara et al., 2022).

End-Point Device Management

End-point device management platforms also help. These platforms provide an overall view of all connected devices so that administrators can monitor devices, note the health of the device, update firmware, and enforce security protocols from a single dashboard when needed. For example, if a particular brand of smart cameras is found to have a security vulnerability, administrators can patch them or disconnect them immediately and wait for a fix to become available if one is not yet ready (Pieroni et al., 2020).

The convergence of PKI and end-point device management is important for IoT security. PKI makes sure devices that use the network are genuine, and end-point management makes sure that devices behave as they are supposed to once they are connected. This dual-prong approach to security is helpful, for example, if there is a situation where a smart meter is compromised after connecting to the network. PKI would have ensured its authenticity prior to connection, but post-connection malicious influences were spotted by end-point management tools. Thanks to them corrective action could be taken.