## 5 Results
### Experiment 2
The reason why Buildroot OS has fared so well with the specific experiments (within this study) is likely because of its minuscule hardware requirements. An interpretation based on the data provided could point to an efficiency increase with a smaller number of drivers/ extra applications. Temperature results were also an important factor within testing; however, their importance may have been overemphasised as they do not tell much when it comes to a comparison standpoint. The current draw results are much more effective at providing sound conclusions when compared; however, they may have been more useful if all devices successfully exported them. There are a number of attacks related to the current draw characteristics of WSNs. For example, a side-channel attack, where an adversary uses information obtained from the side-effects of a sensor, such as the power consumption or electromagnetic radiation [50], to obtain sensitive information, such as encryption keys [51]. In particular, these types of side-channel attacks can be performed by analyzing the power consumption patterns of nodes when performing cryptographic operations [52]. Such analysis of a sensor's current draw allows an adversary to obtain information about the encryption keys being used in the network, allowing them to launch further attacks, such as eavesdropping on communication or altering the transmitted data [51]. To prevent side-channel attacks in WSNs, it is important to implement security measures that are designed to obscure the information obtained through side-channel analysis. This can be achieved through techniques such as power obfuscation, randomization, or by using specialized hardware that is designed to prevent side-channel attacks. Furthermore, the current draw characteristics of WSNs can be used to disrupt the normal operation of the network by launching a jamming attack [53], where an adversary transmits high-power signals in the same frequency band used by the WSN, effectively blocking or interfering with the wireless communication between the nodes. Jamming attacks can have a significant impact on the normal operation of sensor networks. These impacts include disrupted or lost communication, and transmission of incorrect data based on faulty or manipulated information. In some cases, such attacks can take down the entire network. Finally, power exhaustion attacks on WSNs can be the result of an adversary sending large amounts of data to one or more sensor nodes, effectively overwhelming the node and causing its power consumption to increase significantly [54]. Such attacks can cause the sensor to run out of battery power, potentially leading to a disruption in the normal operation of the network. This can have a severe impact on the performance and reliability of WSNs, especially if the network is composed of nodes with limited battery life. To prevent power exhaustion attacks, it is important to implement security measures that can detect and mitigate these types of attacks in real time [55]. This can be achieved through  
Figure 10: Kali Linux temperature. techniques such as rate limiting, where the amount of data that can be transmitted to a node is limited, or through the use of energy-efficient communication protocols that reduce the power consumption of the network [16]. Additionally, implementing encryption and authentication mechanisms can help to prevent unauthorized access to the network, which can limit the impact of a power exhaustion attack.