Analyze and summarize the key points of the article 'From Blocking to Banning: An In-depth Study on Defense Techniques Against Multimodal Large Model Jailbreak Attacks'. Focus on the four defense technology routes, the practical effects of solutions like HiddenDetect, and the proposed three-layer defense system of 'input-model-output'. Highlight how the attack success rate can be reduced from 46.5% to below 5.6%.