noun
illegal copy; unauthorized copy; piracy
Refers to the act or product of copying software, media, or documents without permission. Often used in contexts of copyright infringement.
See also: 違法コピー
不正コピーは法律で禁止されています。
Illegal copying is prohibited by law.
彼はソフトウェアの不正コピーで訴えられた。
He was sued for unauthorized copying of software.