This paper investigates the fading broadcast channel with confidential messages (BCC), where a source node transmits common information to both receivers and confidential information to receiver 1. The channel from the source node to each receiver is corrupted by multiplicative fading gain coefficients and additive Gaussian noise. The paper assumes that the channel state information (CSI) is known at both the transmitter and the receivers. The main contributions include: 1. **Secrecy Capacity Region of Parallel BCCs**: The secrecy capacity region of the parallel BCC with independent subchannels is established, and a converse proof is provided to show that independent input distribution for each subchannel is optimal. This result is then specialized to the parallel BCC with degraded subchannels. 2. **Parallel Gaussian BCC**: The secrecy capacity region of the parallel Gaussian BCC is derived, and the optimal power allocations that achieve the boundary of this region are derived. The results are shown to be applicable to the basic Gaussian BCC. 3. **Fading BCC**: The ergodic secrecy capacity region of the fading BCC is studied, and the optimal power allocations that achieve the boundary of this region are derived. The outage performance of the fading BCC is also analyzed, considering a long-term power constraint. Power allocations that minimize the outage probability are derived under different conditions. The paper provides a comprehensive analysis of the security performance of the fading BCC, including both ergodic and outage performance, and offers practical insights into optimal power allocation strategies.This paper investigates the fading broadcast channel with confidential messages (BCC), where a source node transmits common information to both receivers and confidential information to receiver 1. The channel from the source node to each receiver is corrupted by multiplicative fading gain coefficients and additive Gaussian noise. The paper assumes that the channel state information (CSI) is known at both the transmitter and the receivers. The main contributions include: 1. **Secrecy Capacity Region of Parallel BCCs**: The secrecy capacity region of the parallel BCC with independent subchannels is established, and a converse proof is provided to show that independent input distribution for each subchannel is optimal. This result is then specialized to the parallel BCC with degraded subchannels. 2. **Parallel Gaussian BCC**: The secrecy capacity region of the parallel Gaussian BCC is derived, and the optimal power allocations that achieve the boundary of this region are derived. The results are shown to be applicable to the basic Gaussian BCC. 3. **Fading BCC**: The ergodic secrecy capacity region of the fading BCC is studied, and the optimal power allocations that achieve the boundary of this region are derived. The outage performance of the fading BCC is also analyzed, considering a long-term power constraint. Power allocations that minimize the outage probability are derived under different conditions. The paper provides a comprehensive analysis of the security performance of the fading BCC, including both ergodic and outage performance, and offers practical insights into optimal power allocation strategies.