China uses statistics, entropy of packets and other DPI-like methods[1], also HN discussions of it[2]: [1] https://gfw.report/publications/usenixsecurity23/en

China uses statistics, entropy of packets and other DPI-like methods[1], also HN discussions of it[2]: [1] https://gfw.report/publications/usenixsecurity23/en/ https://gfw.report/publications/usenixsecurity23/en/ [2] https://news.ycombinator.com/item?id=36531485 https://news.ycombinator.com/item?id=36531485