Which of the following is a common threat in an internal network with remote access?

In an internal network with remote access, a common threat is the risk of man-in-the-middle attacks. This type of attack occurs when an unauthorized party intercepts communication between two legitimate users. In a remote access scenario, particularly if unsecured connections are used, attackers can exploit vulnerabilities to access sensitive data as it travels over the network.

Given the nature of remote connections, where users may be accessing the network from various locations—often using less secure networks—there is an increased vulnerability to interception. Attackers can use techniques such as session hijacking or packet sniffing to capture data transmitted over the network. This highlights the importance of implementing encryption and using secure communication protocols (like VPNs) to help mitigate this risk.

While insider threats, cross-site scripting, and phishing attacks are significant security concerns, they involve different attack vectors and are not specifically tied to the vulnerabilities introduced by remote access on an internal network in the same way that man-in-the-middle attacks are.