to crowdsource information about sb or sth (typically as a form of vigilantism resulting in doxing)
Definitions (Wiktionary)
noun, Internet, neologism, slang
human flesh search; a large-scale collective online effort to find details about a person or event; doxing (syn.) 肉搜, 人肉搜索引擎, 人肉
Examples (粵典–words.hk)
Cantonese
人肉搜索
人肉搜索
jan4 juk6 sau2 sok3
the action of searching someone by peoples' real-life social connections