What is a machine-in-the-middle attack?

A machine-in-the-middle attack refers to a scenario where a third party intercepts and potentially alters communications between two parties without their knowledge. This type of attack can occur in various forms, such as capturing data packets over a network or impersonating one of the communicating parties.

In this context, the term "machine" indicates that a device is being used to mediate or intercept communications between two other devices (the "in-between" part). The malicious actor can eavesdrop on the communication, alter the messages, inject false information, or steal sensitive data such as login credentials or confidential information.

Understanding what distinguishes a machine-in-the-middle attack is critical for cybersecurity awareness, as it emphasizes the importance of securing communication channels through encryption and proper authentication mechanisms to protect data integrity and confidentiality during transit.