The rapid evolution of the internet has transformed daily life, enabling activities like shopping, banking and education. This alteration has also exposed significant cybersecurity risks for consumers. Among these threats, Man-in-the-Middle (MITM) attacks are distinguished by their ability to intercept and alter communications between parties. MITM exploits weaknesses in network protocols, jeopardizing data confidentiality, integrity and availability. This paper analyses and assesses the mechanisms of MITM attacks, highlighting vulnerabilities such as ARP spoofing and SSL stripping. It also evaluates countermeasures such as cryptographic validation, robust encryption and network security protocols. The study highlights the imperative of implementing multi-layered security measures across cloud service providers, applications, and APIs. Research demonstrates that implementing methods such as HTTPS Strict Transport Security (HSTS) and dynamic ARP cache management significantly mitigates MITM vulnerabilities. This review examines historical and current patterns in MITM attacks to provide actionable advice for securing communication channels, enhancing user trust and addressing the growing cyber threat environment.