The document presents the Secure Cloud Transmission Protocol (SCTP), designed to enhance security in cloud computing through strong authentication, cryptographic techniques, and intruder detection methods. It incorporates multilevel authentication and a usage profile-based intruder prevention system to safeguard cloud transactions against various attacks. The performance and effectiveness of SCTP are analyzed using Petri net models, comparing its capabilities to existing protocols for cloud security and identifying its applicability in high-stakes environments.