Setting up a system that monitors, detects, and blocks potentially unauthorized data transmissions can dramatically lower the likelihood of sensitive information being leaked or transferred outside the company by an insider with legitimate access. While biometric authentication adds a layer of security, it does not prevent data exfiltration by authenticated users. Disabling unused service ports and enforcing strong encryption enhance security but are not directly effective in monitoring or preventing the transfer of sensitive data from insiders. Segmenting the network can reduce the risk of widespread internal access, but it is not specifically aimed at preventing data exfiltration.