What is the recommended action if a technician suspects malware on a system?

When a technician suspects malware on a system, the recommended action is to disconnect the affected system from the network. This step is crucial because it helps to prevent the potential spread of malware to other devices connected to the same network. Malware can often propagate through network connections, so isolating the infected system limits the risk of further compromise.

Additionally, disconnecting from the network can help protect sensitive data stored on other devices and systems that might be accessed by the compromised system. This action allows the technician to investigate and remediate the issue without risking additional breaches or loss of data.

Other actions, while important, follow after this initial step. For instance, updating software could be beneficial for security but won't resolve an existing malware infection. Similarly, increasing network monitoring can help identify issues but does not directly address the immediate threat. Changing user passwords might be necessary later, particularly if credentials have been compromised, but it wouldn't resolve the active malware threat on the system. Therefore, isolating the system is a critical first step in managing a suspected malware infection.