Causes of Decreased Disk Space

D.

Based on the scenario presented, the most likely cause of the decreased disk space is option B, logs and events anomalies.

Load balancers distribute incoming network traffic across multiple servers to ensure that no single server is overloaded, which can result in decreased performance or even crashes. If the security technician is receiving alerts indicating that load balancers have had a significant increase in traffic, it is likely that the servers are receiving more incoming internet traffic than usual.

An increase in incoming internet traffic can cause servers to generate more logs and events, which can take up a significant amount of disk space. If the disk space on several servers has reached capacity, this can lead to performance issues or even system crashes.

Additionally, the increase in internet traffic may be a sign of a security issue such as a DDoS attack or malware infection. In such cases, the logs and events generated by the servers can provide valuable information about the nature of the attack or infection, which can help the security technician determine the appropriate response.

While misconfigured devices (option A), authentication issues (option C), and unauthorized software (option D) can all potentially contribute to decreased disk space, the scenario presented suggests that logs and events anomalies are the most likely cause given the increase in traffic and alerts from load balancers.