A June 2024 internal MESA Team survey ('针对审查系统的科学研究及探测技术调研报告') catalogs the academic censorship-measurement toolkit (OONI, Augur, Satellite, Quack/Hyperquack, GFWatch, GFWeb, middlebox weaponization studies, traceroute-based middlebox localization, device fingerprinting) and separately reviews circumvention-tool countermeasures, explicitly naming Lantern alongside Psiphon, Tor Meek and Signal as tools using uTLS-style TLS ClientHello mimicry and domain-fronting.

A June 2022 IIE CAS master's thesis, 'Research on Key Technologies of DoH Traffic Identification' (author name redacted, supervised by Professor Fang Binxing -- publicly known as chief architect of the Great Firewall and later Geedge Networks' founder/chief scientist), develops: (1) a light-load connection-multiplexing active scanner to discover DoH resolvers at scale, (2) a one-class ML classifier trained only on DoH samples plus TLS statistical features to catch DoH traffic missed by rule matching, and (3) a DoH fingerprinting method that strips HTTP/2 control-frame noise -- explicitly aimed at 'identifying users visiting websites from passive DoH traffic,' i.e. website fingerprinting through encrypted-DNS-wrapped connections.

An IIE CAS technical whitepaper for the "High-speed Network Traffic Processing and Analysis System" names the "MESA" team (处理架构组MESA团队, "Massive Effective Stream Analysis") as part of IIE's Second Research Office, lists deployment case studies at China's National Administration of State Secrets Protection (国家保密局), the National Computer Network and Information Security Management Center, Guangdong provincial e-government services, and CNCERT (国家互联网应急中心), and gives a named IIE contact (name/phone/email redacted here). The product classifies behavior inside encrypted tunnels (remote control, audio/video calls, encrypted mail, VPN) and dozens of IM/social apps via SSL/SSH/IPSEC/QUIC/SOCKS protocol detection.

A 2020 MESA Lab monthly report describes building a sapp plugin that extracts packet-sequence features specifically "for DoH (DNS-over-HTTPS) service discovery," alongside a broader CSTNET DoH measurement-report effort and configuring a DNS-to-DoH gateway -- confirming sapp is used to fingerprint DoH traffic via statistical sequence features rather than plaintext DNS content.

MESA Lab researcher notes on an encrypted-video-identification project describe adding SSL-layer information output to more precisely trace a flow's true source/identity, and considering reinforcement learning so the identification model adapts as network conditions change, working within/around sapp's plugin limitations.

A MESA Lab task tracker records the assignment "TSG: determine how many clients are behind an IP address," and a companion technical design document details the method: identify distinct TLS clients sharing one public IP using a <JA3 fingerprint, server domain, server IP> 3-tuple (JA3 alone collides across different apps), then use TLS Session Ticket reuse/lifetime sequences per identified client to detect multiple concurrent devices (i.e. NAT) behind that IP.

Internal MESA Lab reading notes dissect the USENIX 2024 paper on fingerprinting obfuscated proxies via encapsulated TLS handshakes, highlighting its protocol-agnostic packet-size-3-gram-plus-Mahalanobis-distance-over-bursts classifier, which the paper's own mid-size-ISP deployment reliably fingerprinted across shadowsocks, vmess, trojan, and vless-family configurations at false-positive rates the notes explicitly say the annotator estimates the GFW would find operationally acceptable (<0.6%). The notes flag the technique's main gaps as: no public source code, sharply reduced true-positive rate under connection multiplexing (10-30% vs. 60-80% unmultiplexed), and no evaluation against UDP/QUIC.