In cybersecurity, the acronym MITM stands for Man-in-the-Middle. This type of attack occurs when a malicious actor intercepts communication between two parties, allowing them to eavesdrop or manipulate the transmission of data. MTIM attacks can compromise sensitive information, such as passwords and financial data, and can occur through various methods, including session hijacking or exploiting unsecured networks. Preventative measures include using encryption and secure authentication.