On August 7, 2026, Attorney Xu Wei of Beijing King&Capital Law Firm visited the firm’s Nanjing branch to deliver a special lecture titled “Digital Criminal Defense: Reconstructing the Discovery and Argumentation of Legal Facts Using Digital Technology.” This session focused on cutting-edge practical topics such as reviewing electronic evidence, AI-assisted defense strategies, and courtroom visualization, attracting local senior criminal defense attorneys, young practitioners, and law students to attend. The venue was filled to capacity.
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Addressing Industry Pain Points: Analyzing the Reality of Data Imbalance Between Prosecution and Defense
Attorney Xu Wei began by highlighting a common challenge in today’s criminal defense practice: Criminal cases now routinely involve terabytes of electronic data and tens of millions of chat records. The prosecution holds the authority to filter this data, selecting only incriminating content for inclusion in the case file, while a vast amount of evidence pointing to innocence or mitigating circumstances is set aside. Judicial practice has long relied on testimonial evidence, which runs counter to the principle of the Criminal Procedure Law that emphasizes “objective evidence.” On the other hand, the prosecutorial system has fully digitized case handling, with VR reconstructions and big data oversight models widely implemented. If defense attorneys continue to rely solely on traditional paper-based case review, achieving equality between the prosecution and the defense will remain elusive. Digital criminal defense is precisely the key path to breaking this impasse.
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No Prior Experience Required: A Comprehensive Guide to Practical Digital Defense Techniques
No coding experience is required for this entire course. Attorney Xu systematically explains the complete workflow of digital criminal defense: leveraging AI to perform massive data mining and visualize professional factual arguments, while clearly acknowledging that AI has “hallucination” flaws and must adhere to the fundamental principle of “AI retrieval, attorney review.” He breaks down four practical search methods: targeted keyword searches, local AI processing of massive files, cross-referencing electronic data with verbal evidence, and uncovering structurally favorable facts such as risk control measures and proactive cooperation. Using real-world case demonstrations, he shows how to simplify complex technical facts using timelines, causal structure diagrams, and forensic schematics, enabling judges to intuitively accept the defense’s arguments.
Addressing the AI compliance issues of greatest concern to lawyers, Attorney Xu Wei clearly delineated the professional red lines: original case files must be processed offline and locally; uploading them to public internet platforms or overseas platforms is strictly prohibited; AI-generated content must be verified item by item against case files and precedents; and the entire data analysis process must be traceable and reproducible to avoid professional risks such as information leaks or the exclusion of evidence.
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Lively On-Site Exchange: Participants Reported Gaining Valuable Insights
After the lecture, the on-site interaction was lively. Practicing attorneys actively asked questions about the challenges of cross-examining electronic evidence in cybercrime and financial crime cases, while law students sought guidance on digital evidence collection and the basics of AI tool operation. Attorney Xu Wei provided detailed answers to each question. Many participating colleagues noted that they previously felt overwhelmed by vast amounts of electronic data and didn’t know where to begin; this course provided a comprehensive, immediately actionable case-handling workflow, shattering the preconceived notion that “digital technology is too difficult to master.” Law students also acknowledged that this practical course bridged the gap between classroom theory and real-world case handling, laying a crucial foundation for their future careers.
Conclusion
Electronic data has become the core medium for evidence in criminal cases, and digital proficiency has emerged as an essential skill for the next generation of criminal defense attorneys. Attorney Xu Wei’s lecture in Nanjing provided local legal professionals with a standardized, accessible practical approach to digital criminal defense. Participants unanimously expressed their intention to apply what they learned to their casework, using digital tools to uncover objective evidence and better protect the legitimate rights and interests of their clients.
