Adversarial attacks have been attractive topics in the field of security of deep learning. Recent research suggested that spiking neural networks (SNNs) could be more robust to attacks than conventional deep neural networks (DNNs). To enhance the robustness, this study proposes a hybrid model, integrating SNNs with Support Vector Machine, that has been adopted to improve accuracy performance primarily. Experimental studies demonstrate that the hybrid model performs better than a vanilla SNN model as well as a conventional DNN model, showing the potential of the hybrid model in the security domain. This study also provides an experimental analysis of the robustness of SNNs by varying internal parameters under different attack intensities. Experimental results show that careful selection of parameters improves robustness performance by more than 5 times, especially under strong attacks.