Wiktionary
vb. (present participle of dox English)
Wikipedia
Doxing (from dox, abbreviation of documents), or doxxing, is the Internet-based practice of researching and broadcasting private or identifiable information (especially personally identifiable information) about an individual or organization.
The methods employed to acquire this information include searching publicly available databases and social media websites (like Facebook), hacking, and social engineering. It is closely related to internet vigilantism and hacktivism.
Doxing may be carried out for various reasons, including to aid law enforcement, business analysis, extortion, coercion, harassment, online shaming, and vigilante justice, or for more comical and harmless purposes such as to perform Pranks.