Large language models (LLMs) have gained extensive applications in the digital era

yet their vulnerability to jailbreak attacks has become increasingly prominent. Leveraging linguistic complexity and model prediction uncertainty

jailbreak attacks employ diverse tactics such as prompt injection and social engineering to induce models to generate harmful content. These attacks pose substantial negative impacts on model reliability and societal dimensions

including ethical and moral risks

security threats

and trust crises. Case studies

such as chatbots generating violent content

are presented to illustrate the attack hazards. For defense

a multi-layered system is established encompassing: 1) Input filtering (rule-based filtering

semantic analysis

and adversarial training filtration)

2) Model reinforcement (adversarial training

safety fine-tuning

and multimodal training)

and 3) Output monitoring and correction (real-time monitoring and rectification mechanisms). These strategies demonstrate clear theoretical foundations and practical effectiveness. Continuous research on LLM security and optimization of defense frameworks are crucial to ensuring robust development and unlocking the full potential of large models.