CNCC2021 Technical Forum – Security Challenges in Digital Transformation

In recent years, cloud computing and big data have accelerated the integration of information technology with the real economy, prompting a wave of digital transformation that brings both efficiency gains and new security challenges. Ant Group responded by hosting the CNCC2021 sub‑forum, inviting experts from academia and industry to discuss security risks in digital governance.

The forum was livestreamed on December 17, 2021 from 09:00 to 12:00 on the CNCC website.

Speaker: Ren Kui (Zhejiang University) Title: “Privacy Computing: Moving Toward Practicality” Abstract: The talk covers data desensitization, differential privacy, and secure multiparty computation, showing how different techniques can be applied at various stages of the data lifecycle. Bio: Ren Kui is a professor, ACM and IEEE Fellow, dean of the School of Cyberspace Security, and an internationally recognized expert in data security, AI security, IoT security, and privacy protection, with numerous awards.

Speaker: Chen Wenguang (Tsinghua University) Title: “Exploring Native Personal Privacy Protection Systems” Abstract: With personal data protection laws such as GDPR, the talk introduces early research on native systems that support data provision, auditing, retrieval, and deletion across enterprises, using federated learning and privacy‑computing techniques. Bio: Chen Wenguang is a professor whose research spans operating systems, programming languages, and parallel computing; he has received multiple national science awards and holds leadership roles in ACM China.

Speaker: Lin Jingqiang (University of Science and Technology of China) Title: “User Privacy Protection in Single Sign‑On Services” Abstract: The presentation analyzes privacy leakage risks inherent in SSO protocols, discusses the tension between security requirements and user privacy, and describes a newly designed SSO service that embeds privacy‑preserving features. Bio: Lin Jingqiang is a professor specializing in cryptography, system security, and network security, with extensive experience in national key R&D projects and publications in top security conferences and journals.

Speaker: Yu Yu (Shanghai Jiao Tong University) Title: “The Concrete Security and High‑Performance Implementation of Yao’s Garbled Circuits” Abstract: The talk reviews modern free‑XOR and half‑gate MPC protocols, their AES‑based instantiations, and reveals that some libraries achieve security O(2^k/C) rather than the ideal 2^k. It then presents a concrete attack on an 80‑bit, 10^9‑gate garbled circuit and proposes a secure AES/SM4 half‑gate implementation with provable O(2^k) security. Bio: Yu Yu is a former post‑doc at KU Leuven, now a professor with numerous publications in top cryptography venues and service on steering committees of major cryptographic conferences.

Speaker: Li Qi (Tsinghua University) Title: “AI‑Driven Cybersecurity: Opportunities and Challenges” Abstract: The session introduces AI‑based network attack detection techniques and discusses the security risks introduced by deploying AI in cyber‑defense. Bio: Li Qi is an associate professor focusing on internet, cloud, mobile, and big‑data security, with papers in USENIX Security, ACM CCS, NDSS, and several awards.

Speaker: Wei Tao (Ant Group) Title: “Security and Privacy in Complex Systems” (speaker bio only) Bio: Wei Tao, Vice President of Ant Group, leads security and privacy technology, serves as a visiting professor at Peking University, and co‑founded the InForSec security forum. He has contributed to system security, data security, AI security, privacy computing, and autonomous‑vehicle safety.

Speaker: Liu Jian (Information Industry Information Security Evaluation Center) Title: “Security Parallel Slice White‑Paper Release” Abstract: The white‑paper proposes a next‑generation security architecture—Security Parallel Slice—that decouples security controls from business logic across edge, network, and cloud layers, providing standardized interfaces for proactive defense, security governance, and data protection. Bio: Liu Jian is Deputy Director of the national security evaluation center, a CISSP, CISP, and senior engineer with extensive experience in security standards, risk assessment, and large‑scale national cyber‑security operations.

Speaker: Wang Haijun (Ant Group AntChain) Title: “Security and Automated Analysis Techniques for Smart Contracts” Abstract: The presentation surveys recent research on automated security analysis of blockchain smart contracts, covering code‑level vulnerabilities and transaction‑level risks, and shares AntChain’s practical experiences in addressing these challenges. Bio: Wang Haijun holds a Ph.D. from Xi’an Jiaotong University and a post‑doc at Nanyang Technological University, with over 20 papers in top security and software engineering venues.