In the Internet of Things, security and privacy are important considerations. A huge number of devices and communication channels make up an IoT system.
IoT systems face a variety of security and privacy concerns from both internal and external attackers, as well as classic network-related vulnerabilities and emergent threats.
Before using the blockchain approach to create a safe and effective IoT system, it is critical to understand the special security and privacy risks associated with IoT systems.
The majority of security risks stem from a focus on IoT data and vulnerabilities in the underlying processing and communication technology.
Confidentiality, integrity, and authentication are some of the security considerations.
These features guarantee that data contents aren't exposed to enemies, data packets aren't changed with during transmissions, and unauthorized users aren't able to access the system.
Following that, privacy concerns are heightened, coupled with an increase in consumers' waking awareness of their sensitive data.
The label (user identification) and the information associated to the label are the two main components of privacy.
A user is the principal entity in an IoT application, such as a vehicular network, smart grids, or e-healthcare, who contributes data packets including personal information like destinations, smart metering readings, and treatment histories.
Knowing both the identities of users and the personal information associated with them allows for the construction of privacy. Transmitting data packets without first sanitizing them might lead to privacy leakage.