noun
Technical term for measures that prevent unauthorized duplication of digital media such as CDs, DVDs, or software.
from English copy guard
このDVDにはコピーガードがかかっている。
This DVD has copy protection.
Variant with interpunct; less common in running text.
Synonymous; コピーガード is more common in consumer contexts, while コピープロテクト is often used in software.
Wasei-eigo from English 'copy' and 'guard'.