Digital Twin (DT) technology has rapidly evolved, finding applications in critical sectors such as healthcare, manufacturing, and smart cities. However, its integration with legacy systems and IoT devices exposes significant cybersecurity vulnerabilities, including unauthorized data access, malicious tampering, and system intrusions. Traditional security solutions often fail to address these multifaceted challenges effectively. This paper introduces the Multi-Layer Encryption Validation and Execution System (MLEVES), a pioneering security framework designed to protect DT systems against advanced cyber threats. It employs a strong combination of multi layer encryption, dynamic validation processes, and secure execution mechanisms to ensure the integrity, confidentiality, and reliability of data operations. It is particularly adept at countering threats such as privilege escalation, rogue device infiltration, and data extraction by creating multiple layers of defense that complement each other. The proposed system is meticulously evaluated for its effectiveness in mitigating these threats and its ability to seamlessly integrate into existing DT architectures. Through theoretical analysis and practical applications, this paper highlights the transformative potential of MLEVES to strengthen the security side of Digital Twin ecosystems. The adaptability of MLEVES across diverse sectors further underscores its importance as a critical component in the advancement of secure digital infrastructures.