This document proposes a novel hybrid security system for OFDM-PON using a highly improved RC6 algorithm and scrambling technique. The data is first scrambled using Morlet wavelet transform for spatial domain scrambling without data loss. It is then encrypted using a highly improved RC6 algorithm for enhanced security. By combining scrambling and encryption, a two-tier security approach is implemented with low complexity. Simulation results show low bit and symbol error rates, demonstrating improved system performance. The proposed scheme provides enhanced security for OFDM-PON networks with potential applications in secure optical communications.